90798180 has 48 divisors (see below), whose sum is σ = 277349184. Its totient is φ = 22011520.

The previous prime is 90798157. The next prime is 90798209. The reversal of 90798180 is 8189709.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68127 + ... + 69446.

It is an arithmetic number, because the mean of its divisors is an integer number (5778108).

Almost surely, 2^90798180 is an apocalyptic number.

It is an amenable number.

90798180 is an abundant number, since it is smaller than the sum of its proper divisors (186551004).

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

90798180 is a wasteful number, since it uses less digits than its factorization.

90798180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137596 (or 137594 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 90798180 is about 9528.8079002570. The cubic root of 90798180 is about 449.4613802570.

The spelling of 90798180 in words is "ninety million, seven hundred ninety-eight thousand, one hundred eighty".