90640300 has 18 divisors (see below), whose sum is σ = 196689668. Its totient is φ = 36256080.

The previous prime is 90640289. The next prime is 90640301. The reversal of 90640300 is 304609.

It is not an unprimeable number, because it can be changed into a prime (90640301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453102 + ... + 453301.

Almost surely, 2^90640300 is an apocalyptic number.

It is an amenable number.

90640300 is an abundant number, since it is smaller than the sum of its proper divisors (106049368).

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

90640300 is a wasteful number, since it uses less digits than its factorization.

90640300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906417 (or 906410 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 90640300 is about 9520.5199437846. The cubic root of 90640300 is about 449.2007210987.

Adding to 90640300 its reverse (304609), we get a palindrome (90944909).

The spelling of 90640300 in words is "ninety million, six hundred forty thousand, three hundred".