72632891 has 16 divisors (see below), whose sum is σ = 79922304. Its totient is φ = 65729664.

The previous prime is 72632869. The next prime is 72632893. The reversal of 72632891 is 19823627.

It is a cyclic number.

It is not a de Polignac number, because 72632891 - 2¹⁴ = 72616507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72632893) 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, 48236 + ... + 49718.

It is an arithmetic number, because the mean of its divisors is an integer number (4995144).

Almost surely, 2^72632891 is an apocalyptic number.

72632891 is a deficient number, since it is larger than the sum of its proper divisors (7289413).

72632891 is a wasteful number, since it uses less digits than its factorization.

72632891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610.

The product of its digits is 36288, while the sum is 38.

The square root of 72632891 is about 8522.4932384837. The cubic root of 72632891 is about 417.2321606702.

The spelling of 72632891 in words is "seventy-two million, six hundred thirty-two thousand, eight hundred ninety-one".