33380172 has 108 divisors (see below), whose sum is σ = 99590400. Its totient is φ = 9398592.

The previous prime is 33380167. The next prime is 33380173. The reversal of 33380172 is 27108333.

It is a super-2 number, since 2×33380172² = 2228471765499168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33380173) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223954 + ... + 224102.

Almost surely, 2^33380172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33380172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49795200).

33380172 is an abundant number, since it is smaller than the sum of its proper divisors (66210228).

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

33380172 is a wasteful number, since it uses less digits than its factorization.

33380172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 33380172 is about 5777.5576154635. The cubic root of 33380172 is about 321.9804651035.

The spelling of 33380172 in words is "thirty-three million, three hundred eighty thousand, one hundred seventy-two".