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72876841 = 172252169
BaseRepresentation
bin1000101100000…
…00001100101001
312002010112020021
410112000030221
5122124024331
611122000441
71543304632
oct426001451
9162115207
1072876841
11381564a4
12204a6121
13121380bb
149970889
1565e8211
hex4580329

72876841 has 6 divisors (see below), whose sum is σ = 77416190. Its totient is φ = 68589696.

The previous prime is 72876827. The next prime is 72876871. The reversal of 72876841 is 14867827.

It can be written as a sum of positive squares in 3 ways, for example, as 10530025 + 62346816 = 3245^2 + 7896^2 .

It is not a de Polignac number, because 72876841 - 29 = 72876329 is a prime.

It is a super-2 number, since 2×728768412 = 10622067908278562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72876821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125796 + ... + 126373.

Almost surely, 272876841 is an apocalyptic number.

It is an amenable number.

72876841 is a deficient number, since it is larger than the sum of its proper divisors (4539349).

72876841 is a wasteful number, since it uses less digits than its factorization.

72876841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252203 (or 252186 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 72876841 is about 8536.7933675356. The cubic root of 72876841 is about 417.6987538972.

The spelling of 72876841 in words is "seventy-two million, eight hundred seventy-six thousand, eight hundred forty-one".

Divisors: 1 17 289 252169 4286873 72876841