33252990 has 32 divisors (see below), whose sum is σ = 81164160. Its totient is φ = 8716704.

The previous prime is 33252977. The next prime is 33252997. The reversal of 33252990 is 9925233.

It is a super-2 number, since 2×33252990² = 2211522687880200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33252997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7624 + ... + 11163.

It is an arithmetic number, because the mean of its divisors is an integer number (2536380).

Almost surely, 2^33252990 is an apocalyptic number.

33252990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33252990 is an abundant number, since it is smaller than the sum of its proper divisors (47911170).

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

33252990 is a wasteful number, since it uses less digits than its factorization.

33252990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18856.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 33252990 is about 5766.5405573879. The cubic root of 33252990 is about 321.5710180623.

The spelling of 33252990 in words is "thirty-three million, two hundred fifty-two thousand, nine hundred ninety".