90768040 has 32 divisors (see below), whose sum is σ = 222795360. Its totient is φ = 33006400.

The previous prime is 90768037. The next prime is 90768047. The reversal of 90768040 is 4086709.

It is a junction number, because it is equal to n+sod(n) for n = 90767987 and 90768005.

It is not an unprimeable number, because it can be changed into a prime (90768047) 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, 102706 + ... + 103585.

It is an arithmetic number, because the mean of its divisors is an integer number (6962355).

Almost surely, 2^90768040 is an apocalyptic number.

It is an amenable number.

90768040 is an abundant number, since it is smaller than the sum of its proper divisors (132027320).

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

90768040 is a wasteful number, since it uses less digits than its factorization.

90768040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206313 (or 206309 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 90768040 is about 9527.2262490192. The cubic root of 90768040 is about 449.4116426036.

The spelling of 90768040 in words is "ninety million, seven hundred sixty-eight thousand, forty".