89436720 has 40 divisors (see below), whose sum is σ = 277254576. Its totient is φ = 23849728.

The previous prime is 89436707. The next prime is 89436727. The reversal of 89436720 is 2763498.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (89436727) 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, 186087 + ... + 186566.

Almost surely, 2^89436720 is an apocalyptic number.

89436720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89436720 is an abundant number, since it is smaller than the sum of its proper divisors (187817856).

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

89436720 is a wasteful number, since it uses less digits than its factorization.

89436720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372669 (or 372663 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 89436720 is about 9457.0989209165. The cubic root of 89436720 is about 447.2035967764.

The spelling of 89436720 in words is "eighty-nine million, four hundred thirty-six thousand, seven hundred twenty".