89572720 has 20 divisors (see below), whose sum is σ = 208256760. Its totient is φ = 35829056.

The previous prime is 89572673. The next prime is 89572723. The reversal of 89572720 is 2727598.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89572723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559750 + ... + 559909.

It is an arithmetic number, because the mean of its divisors is an integer number (10412838).

Almost surely, 2^89572720 is an apocalyptic number.

89572720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89572720 is an abundant number, since it is smaller than the sum of its proper divisors (118684040).

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

89572720 is a wasteful number, since it uses less digits than its factorization.

89572720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119672 (or 1119666 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 89572720 is about 9464.2865552560. The cubic root of 89572720 is about 447.4301587789.

The spelling of 89572720 in words is "eighty-nine million, five hundred seventy-two thousand, seven hundred twenty".