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1072805349 = 371117273187
BaseRepresentation
bin111111111100011…
…011010111100101
32202202200011021110
4333330123113211
54144114232344
6254241535233
735404460250
oct7774332745
92682604243
101072805349
115006305a0
1225b344519
1314134b885
14a26a0097
15642b33b9
hex3ff1b5e5

1072805349 has 32 divisors (see below), whose sum is σ = 1888275456. Its totient is φ = 524517120.

The previous prime is 1072805347. The next prime is 1072805369. The reversal of 1072805349 is 9435082701.

It is not a de Polignac number, because 1072805349 - 21 = 1072805347 is a prime.

It is a super-2 number, since 2×10728053492 = 2301822633686023602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072805347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132667 + ... + 140520.

It is an arithmetic number, because the mean of its divisors is an integer number (59008608).

Almost surely, 21072805349 is an apocalyptic number.

It is an amenable number.

1072805349 is a deficient number, since it is larger than the sum of its proper divisors (815470107).

1072805349 is a wasteful number, since it uses less digits than its factorization.

1072805349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273225.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1072805349 is about 32753.7074084752. The cubic root of 1072805349 is about 1023.7022160263.

The spelling of 1072805349 in words is "one billion, seventy-two million, eight hundred five thousand, three hundred forty-nine".

Divisors: 1 3 7 11 17 21 33 51 77 119 187 231 357 561 1309 3927 273187 819561 1912309 3005057 4644179 5736927 9015171 13932537 21035399 32509253 51085969 63106197 97527759 153257907 357601783 1072805349