90813798 has 40 divisors (see below), whose sum is σ = 212346288. Its totient is φ = 28953936.

The previous prime is 90813797. The next prime is 90813829. The reversal of 90813798 is 89731809.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90813797) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8461 + ... + 15912.

Almost surely, 2^90813798 is an apocalyptic number.

90813798 is an abundant number, since it is smaller than the sum of its proper divisors (121532490).

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

90813798 is a wasteful number, since it uses less digits than its factorization.

90813798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24410 (or 24401 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 90813798 is about 9529.6273799137. The cubic root of 90813798 is about 449.4871490752.

It can be divided in two parts, 908 and 13798, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 90813798 in words is "ninety million, eight hundred thirteen thousand, seven hundred ninety-eight".