89972736 has 112 divisors (see below), whose sum is σ = 274710144. Its totient is φ = 25657344.

The previous prime is 89972731. The next prime is 89972749. The reversal of 89972736 is 63727998.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89972731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171771 + ... + 172293.

Almost surely, 2^89972736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89972736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137355072).

89972736 is an abundant number, since it is smaller than the sum of its proper divisors (184737408).

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

89972736 is an equidigital number, since it uses as much as digits as its factorization.

89972736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 535 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 89972736 is about 9485.3959326957. The cubic root of 89972736 is about 448.0952178562.

The spelling of 89972736 in words is "eighty-nine million, nine hundred seventy-two thousand, seven hundred thirty-six".