33157872 has 120 divisors (see below), whose sum is σ = 102658608. Its totient is φ = 9989760.

The previous prime is 33157867. The next prime is 33157897. The reversal of 33157872 is 27875133.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191578 + ... + 191750.

Almost surely, 2^33157872 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 33157872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51329304).

33157872 is an abundant number, since it is smaller than the sum of its proper divisors (69500736).

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

33157872 is a wasteful number, since it uses less digits than its factorization.

33157872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 189 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 33157872 is about 5758.2872453534. The cubic root of 33157872 is about 321.2641143046.

The spelling of 33157872 in words is "thirty-three million, one hundred fifty-seven thousand, eight hundred seventy-two".