89733640 has 32 divisors (see below), whose sum is σ = 202639680. Its totient is φ = 35762112.

The previous prime is 89733629. The next prime is 89733643. The reversal of 89733640 is 4633798.

It is a super-2 number, since 2×89733640² = 16104252295299200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 89733593 and 89733602.

It is not an unprimeable number, because it can be changed into a prime (89733643) 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, 7357 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (6332490).

Almost surely, 2^89733640 is an apocalyptic number.

It is an amenable number.

89733640 is an abundant number, since it is smaller than the sum of its proper divisors (112906040).

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

89733640 is a wasteful number, since it uses less digits than its factorization.

89733640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221 (or 8217 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 89733640 is about 9472.7841736208. The cubic root of 89733640 is about 447.6979389213.

The spelling of 89733640 in words is "eighty-nine million, seven hundred thirty-three thousand, six hundred forty".