33207990 has 32 divisors (see below), whose sum is σ = 80199936. Its totient is φ = 8799840.

The previous prime is 33207989. The next prime is 33208001. The reversal of 33207990 is 9970233.

It is a super-2 number, since 2×33207990² = 2205541199680200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495 + ... + 8285.

It is an arithmetic number, because the mean of its divisors is an integer number (2506248).

Almost surely, 2^33207990 is an apocalyptic number.

33207990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33207990 is an abundant number, since it is smaller than the sum of its proper divisors (46991946).

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

33207990 is a wasteful number, since it uses less digits than its factorization.

33207990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 33207990 is about 5762.6374170166. The cubic root of 33207990 is about 321.4258959918.

The spelling of 33207990 in words is "thirty-three million, two hundred seven thousand, nine hundred ninety".