89642720 has 48 divisors (see below), whose sum is σ = 212366448. Its totient is φ = 35758080.

The previous prime is 89642671. The next prime is 89642747. The reversal of 89642720 is 2724698.

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, 91835 + ... + 92805.

It is an arithmetic number, because the mean of its divisors is an integer number (4424301).

Almost surely, 2^89642720 is an apocalyptic number.

89642720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89642720 is an abundant number, since it is smaller than the sum of its proper divisors (122723728).

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

89642720 is a wasteful number, since it uses less digits than its factorization.

89642720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 89642720 is about 9467.9839459095. The cubic root of 89642720 is about 447.5466821873.

The spelling of 89642720 in words is "eighty-nine million, six hundred forty-two thousand, seven hundred twenty".