90769432 has 32 divisors (see below), whose sum is σ = 183682800. Its totient is φ = 41802624.

The previous prime is 90769421. The next prime is 90769433. The reversal of 90769432 is 23496709.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90769433) 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, 81294 + ... + 82402.

Almost surely, 2^90769432 is an apocalyptic number.

It is an amenable number.

90769432 is an abundant number, since it is smaller than the sum of its proper divisors (92913368).

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

90769432 is a wasteful number, since it uses less digits than its factorization.

90769432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 90769432 is about 9527.2993025306. The cubic root of 90769432 is about 449.4139399534.

The spelling of 90769432 in words is "ninety million, seven hundred sixty-nine thousand, four hundred thirty-two".