89780528 has 20 divisors (see below), whose sum is σ = 177652320. Its totient is φ = 43934784.

The previous prime is 89780521. The next prime is 89780531. The reversal of 89780528 is 82508798.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (89780521) 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, 58943 + ... + 60446.

It is an arithmetic number, because the mean of its divisors is an integer number (8882616).

Almost surely, 2^89780528 is an apocalyptic number.

It is an amenable number.

89780528 is a deficient number, since it is larger than the sum of its proper divisors (87871792).

89780528 is a wasteful number, since it uses less digits than its factorization.

89780528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119444 (or 119438 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 89780528 is about 9475.2587299767. The cubic root of 89780528 is about 447.7759030152.

The spelling of 89780528 in words is "eighty-nine million, seven hundred eighty thousand, five hundred twenty-eight".