90785892 has 24 divisors (see below), whose sum is σ = 219139200. Its totient is φ = 29218336.

The previous prime is 90785879. The next prime is 90785897. The reversal of 90785892 is 29858709.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (90785897) 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, 130092 + ... + 130787.

It is an arithmetic number, because the mean of its divisors is an integer number (9130800).

Almost surely, 2^90785892 is an apocalyptic number.

It is an amenable number.

90785892 is an abundant number, since it is smaller than the sum of its proper divisors (128353308).

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

90785892 is a wasteful number, since it uses less digits than its factorization.

90785892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260915 (or 260913 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 90785892 is about 9528.1630968409. The cubic root of 90785892 is about 449.4411036736.

The spelling of 90785892 in words is "ninety million, seven hundred eighty-five thousand, eight hundred ninety-two".