89745880 has 32 divisors (see below), whose sum is σ = 230775840. Its totient is φ = 30769920.

The previous prime is 89745871. The next prime is 89745881. The reversal of 89745880 is 8854798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89745881) 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, 159981 + ... + 160540.

It is an arithmetic number, because the mean of its divisors is an integer number (7211745).

Almost surely, 2^89745880 is an apocalyptic number.

It is an amenable number.

89745880 is an abundant number, since it is smaller than the sum of its proper divisors (141029960).

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

89745880 is a wasteful number, since it uses less digits than its factorization.

89745880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320539 (or 320535 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 89745880 is about 9473.4302129693. The cubic root of 89745880 is about 447.7182938801.

The spelling of 89745880 in words is "eighty-nine million, seven hundred forty-five thousand, eight hundred eighty".