90810836 has 12 divisors (see below), whose sum is σ = 161917812. Its totient is φ = 44548608.

The previous prime is 90810829. The next prime is 90810851. The reversal of 90810836 is 63801809.

It can be written as a sum of positive squares in 2 ways, for example, as 79210000 + 11600836 = 8900^2 + 3406^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90810796 and 90810805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213965 + ... + 214388.

It is an arithmetic number, because the mean of its divisors is an integer number (13493151).

Almost surely, 2^90810836 is an apocalyptic number.

It is an amenable number.

90810836 is a deficient number, since it is larger than the sum of its proper divisors (71106976).

90810836 is a wasteful number, since it uses less digits than its factorization.

90810836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428410 (or 428408 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 90810836 is about 9529.4719685825. The cubic root of 90810836 is about 449.4822621695.

The spelling of 90810836 in words is "ninety million, eight hundred ten thousand, eight hundred thirty-six".