33897872 has 20 divisors (see below), whose sum is σ = 65829120. Its totient is φ = 16909728.

The previous prime is 33897863. The next prime is 33897901. The reversal of 33897872 is 27879833.

It is a happy number.

It is a super-2 number, since 2×33897872² = 2298131452256768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5453 + ... + 9875.

It is an arithmetic number, because the mean of its divisors is an integer number (3291456).

Almost surely, 2^33897872 is an apocalyptic number.

It is an amenable number.

33897872 is a deficient number, since it is larger than the sum of its proper divisors (31931248).

33897872 is a wasteful number, since it uses less digits than its factorization.

33897872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4910 (or 4904 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 33897872 is about 5822.1879049031. The cubic root of 33897872 is about 323.6364870903.

The spelling of 33897872 in words is "thirty-three million, eight hundred ninety-seven thousand, eight hundred seventy-two".