89656728 has 32 divisors (see below), whose sum is σ = 256162560. Its totient is φ = 25616160.

The previous prime is 89656717. The next prime is 89656729. The reversal of 89656728 is 82765698.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89656729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266668 + ... + 267003.

It is an arithmetic number, because the mean of its divisors is an integer number (8005080).

Almost surely, 2^89656728 is an apocalyptic number.

It is an amenable number.

89656728 is an abundant number, since it is smaller than the sum of its proper divisors (166505832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89656728 is a wasteful number, since it uses less digits than its factorization.

89656728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533687 (or 533683 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 89656728 is about 9468.7236732307. The cubic root of 89656728 is about 447.5699929012.

The spelling of 89656728 in words is "eighty-nine million, six hundred fifty-six thousand, seven hundred twenty-eight".