89523640 has 16 divisors (see below), whose sum is σ = 201428280. Its totient is φ = 35809440.

The previous prime is 89523631. The next prime is 89523641. The reversal of 89523640 is 4632598.

It is a self number, because there is not a number n which added to its sum of digits gives 89523640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89523641) 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, 1119006 + ... + 1119085.

Almost surely, 2^89523640 is an apocalyptic number.

It is an amenable number.

89523640 is an abundant number, since it is smaller than the sum of its proper divisors (111904640).

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

89523640 is a wasteful number, since it uses less digits than its factorization.

89523640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238102 (or 2238098 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 89523640 is about 9461.6932945430. The cubic root of 89523640 is about 447.3484230143.

The spelling of 89523640 in words is "eighty-nine million, five hundred twenty-three thousand, six hundred forty".