33156140 has 24 divisors (see below), whose sum is σ = 73293360. Its totient is φ = 12564288.

The previous prime is 33156131. The next prime is 33156157. The reversal of 33156140 is 4165133.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43247 + ... + 44006.

It is an arithmetic number, because the mean of its divisors is an integer number (3053890).

Almost surely, 2^33156140 is an apocalyptic number.

It is an amenable number.

33156140 is an abundant number, since it is smaller than the sum of its proper divisors (40137220).

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

33156140 is a wasteful number, since it uses less digits than its factorization.

33156140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87281 (or 87279 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 33156140 is about 5758.1368514477. The cubic root of 33156140 is about 321.2585204682.

The spelling of 33156140 in words is "thirty-three million, one hundred fifty-six thousand, one hundred forty".