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1320342044 = 2272291491559
BaseRepresentation
bin100111010110010…
…1101001000011100
310102000110022210012
41032230231020130
510201001421134
6335003302352
744501502500
oct11654551034
93360408705
101320342044
1161833157a
1230a21a9b8
1318070aca8
14c74d8300
157adac6ce
hex4eb2d21c

1320342044 has 72 divisors (see below), whose sum is σ = 2800980000. Its totient is φ = 542333568.

The previous prime is 1320342041. The next prime is 1320342083. The reversal of 1320342044 is 4402430231.

It is a super-2 number, since 2×13203420442 = 3486606226308195872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320342041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 846137 + ... + 847695.

It is an arithmetic number, because the mean of its divisors is an integer number (38902500).

Almost surely, 21320342044 is an apocalyptic number.

1320342044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320342044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400490000).

1320342044 is an abundant number, since it is smaller than the sum of its proper divisors (1480637956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320342044 is a wasteful number, since it uses less digits than its factorization.

1320342044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1320342044 is about 36336.5111698963. The cubic root of 1320342044 is about 1097.0560520599.

Adding to 1320342044 its reverse (4402430231), we get a palindrome (5722772275).

The spelling of 1320342044 in words is "one billion, three hundred twenty million, three hundred forty-two thousand, forty-four".

Divisors: 1 2 4 7 14 28 29 49 58 98 116 149 196 203 298 406 596 812 1043 1421 1559 2086 2842 3118 4172 4321 5684 6236 7301 8642 10913 14602 17284 21826 29204 30247 43652 45211 60494 76391 90422 120988 152782 180844 211729 232291 305564 316477 423458 464582 632954 846916 929164 1265908 1626037 2215339 3252074 4430678 6504148 6736439 8861356 11382259 13472878 22764518 26945756 45529036 47155073 94310146 188620292 330085511 660171022 1320342044