33156040 has 16 divisors (see below), whose sum is σ = 74601180. Its totient is φ = 13262400.

The previous prime is 33156031. The next prime is 33156043. The reversal of 33156040 is 4065133.

It can be written as a sum of positive squares in 2 ways, for example, as 33108516 + 47524 = 5754^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (33156043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414411 + ... + 414490.

Almost surely, 2^33156040 is an apocalyptic number.

It is an amenable number.

33156040 is an abundant number, since it is smaller than the sum of its proper divisors (41445140).

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

33156040 is a wasteful number, since it uses less digits than its factorization.

33156040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828912 (or 828908 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 33156040 is about 5758.1281680768. The cubic root of 33156040 is about 321.2581974925.

The spelling of 33156040 in words is "thirty-three million, one hundred fifty-six thousand, forty".