33201990 has 24 divisors (see below), whose sum is σ = 86325408. Its totient is φ = 8853840.

The previous prime is 33201989. The next prime is 33202019. The reversal of 33201990 is 9910233.

It is a super-2 number, since 2×33201990² = 2204744279920200, which contains 22 as substring.

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, 184366 + ... + 184545.

It is an arithmetic number, because the mean of its divisors is an integer number (3596892).

Almost surely, 2^33201990 is an apocalyptic number.

33201990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33201990 is an abundant number, since it is smaller than the sum of its proper divisors (53123418).

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

33201990 is a wasteful number, since it uses less digits than its factorization.

33201990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368924 (or 368921 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 33201990 is about 5762.1167985385. The cubic root of 33201990 is about 321.4065364789.

It can be divided in two parts, 33201 and 990, that added together give a triangular number (34191 = T₂₆₁).

The spelling of 33201990 in words is "thirty-three million, two hundred one thousand, nine hundred ninety".