90880788 has 24 divisors (see below), whose sum is σ = 212361408. Its totient is φ = 30249856.

The previous prime is 90880787. The next prime is 90880799. The reversal of 90880788 is 88708809.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90880787) 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, 3820 + ... + 14012.

It is an arithmetic number, because the mean of its divisors is an integer number (8848392).

Almost surely, 2^90880788 is an apocalyptic number.

It is an amenable number.

90880788 is an abundant number, since it is smaller than the sum of its proper divisors (121480620).

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

90880788 is a wasteful number, since it uses less digits than its factorization.

90880788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943 (or 10941 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 90880788 is about 9533.1415598427. The cubic root of 90880788 is about 449.5976452915.

The spelling of 90880788 in words is "ninety million, eight hundred eighty thousand, seven hundred eighty-eight".