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444013240 = 235111009121
BaseRepresentation
bin11010011101110…
…001101010111000
31010221111012122211
4122131301222320
51402131410430
6112020424504
714001023146
oct3235615270
91127435584
10444013240
112086a77a0
12104848134
1370cb1a38
1442d80596
1528ea972a
hex1a771ab8

444013240 has 32 divisors (see below), whose sum is σ = 1089851760. Its totient is φ = 161459200.

The previous prime is 444013237. The next prime is 444013243. The reversal of 444013240 is 42310444.

It is an interprime number because it is at equal distance from previous prime (444013237) and next prime (444013243).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444013243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504121 + ... + 505000.

Almost surely, 2444013240 is an apocalyptic number.

444013240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444013240 is an abundant number, since it is smaller than the sum of its proper divisors (645838520).

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

444013240 is a wasteful number, since it uses less digits than its factorization.

444013240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009143 (or 1009139 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 444013240 is about 21071.6216746600. The cubic root of 444013240 is about 762.8959455744.

Adding to 444013240 its reverse (42310444), we get a palindrome (486323684).

The spelling of 444013240 in words is "four hundred forty-four million, thirteen thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 1009121 2018242 4036484 5045605 8072968 10091210 11100331 20182420 22200662 40364840 44401324 55501655 88802648 111003310 222006620 444013240