89721872 has 20 divisors (see below), whose sum is σ = 177536256. Its totient is φ = 43906080.

The previous prime is 89721871. The next prime is 89721893. The reversal of 89721872 is 27812798.

It is not an unprimeable number, because it can be changed into a prime (89721871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58904 + ... + 60407.

Almost surely, 2^89721872 is an apocalyptic number.

It is an amenable number.

89721872 is a deficient number, since it is larger than the sum of its proper divisors (87814384).

89721872 is a wasteful number, since it uses less digits than its factorization.

89721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119366 (or 119360 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 89721872 is about 9472.1630053542. The cubic root of 89721872 is about 447.6783671469.

The spelling of 89721872 in words is "eighty-nine million, seven hundred twenty-one thousand, eight hundred seventy-two".