36801990 has 24 divisors (see below), whose sum is σ = 95685408. Its totient is φ = 9813840.

The previous prime is 36801979. The next prime is 36802009. The reversal of 36801990 is 9910863.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204366 + ... + 204545.

It is an arithmetic number, because the mean of its divisors is an integer number (3986892).

Almost surely, 2^36801990 is an apocalyptic number.

36801990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

36801990 is an abundant number, since it is smaller than the sum of its proper divisors (58883418).

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

36801990 is a wasteful number, since it uses less digits than its factorization.

36801990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408924 (or 408921 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 36801990 is about 6066.4643739167. The cubic root of 36801990 is about 332.6266952687.

The spelling of 36801990 in words is "thirty-six million, eight hundred one thousand, nine hundred ninety".