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83137369 = 731912757
BaseRepresentation
bin1001111010010…
…01001101011001
312210102211000211
410331021031121
5132240343434
612125531121
72026441000
oct475111531
9183384024
1083137369
1142a24377
1223a13aa1
13142bb413
14b081c37
157473464
hex4f49359

83137369 has 16 divisors (see below), whose sum is σ = 102064000. Its totient is φ = 67504752.

The previous prime is 83137363. The next prime is 83137391. The reversal of 83137369 is 96373138.

It is not a de Polignac number, because 83137369 - 225 = 49582937 is a prime.

It is a super-2 number, since 2×831373692 = 13823644248484322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83137363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139 + ... + 12895.

It is an arithmetic number, because the mean of its divisors is an integer number (6379000).

Almost surely, 283137369 is an apocalyptic number.

It is an amenable number.

83137369 is a deficient number, since it is larger than the sum of its proper divisors (18926631).

83137369 is a wasteful number, since it uses less digits than its factorization.

83137369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12797 (or 12783 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 83137369 is about 9117.9695656434. The cubic root of 83137369 is about 436.4475824122.

The spelling of 83137369 in words is "eighty-three million, one hundred thirty-seven thousand, three hundred sixty-nine".

Divisors: 1 7 19 49 133 343 931 6517 12757 89299 242383 625093 1696681 4375651 11876767 83137369