89228640 has 48 divisors (see below), whose sum is σ = 281071728. Its totient is φ = 23794176.

The previous prime is 89228639. The next prime is 89228677. The reversal of 89228640 is 4682298.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92467 + ... + 93426.

It is an arithmetic number, because the mean of its divisors is an integer number (5855661).

Almost surely, 2^89228640 is an apocalyptic number.

89228640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89228640 is an abundant number, since it is smaller than the sum of its proper divisors (191843088).

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

89228640 is a wasteful number, since it uses less digits than its factorization.

89228640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185911 (or 185903 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 89228640 is about 9446.0912551171. The cubic root of 89228640 is about 446.8565119578.

The spelling of 89228640 in words is "eighty-nine million, two hundred twenty-eight thousand, six hundred forty".