89911428 has 24 divisors (see below), whose sum is σ = 211448832. Its totient is φ = 29733984.

The previous prime is 89911427. The next prime is 89911447. The reversal of 89911428 is 82411998.

It is a self number, because there is not a number n which added to its sum of digits gives 89911428.

It is not an unprimeable number, because it can be changed into a prime (89911421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27975 + ... + 31022.

It is an arithmetic number, because the mean of its divisors is an integer number (8810368).

Almost surely, 2^89911428 is an apocalyptic number.

It is an amenable number.

89911428 is an abundant number, since it is smaller than the sum of its proper divisors (121537404).

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

89911428 is a wasteful number, since it uses less digits than its factorization.

89911428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59131 (or 59129 counting only the distinct ones).

The product of its digits is 41472, while the sum is 42.

The square root of 89911428 is about 9482.1636771361. The cubic root of 89911428 is about 447.9934164105.

The spelling of 89911428 in words is "eighty-nine million, nine hundred eleven thousand, four hundred twenty-eight".