33728872 has 16 divisors (see below), whose sum is σ = 64186560. Its totient is φ = 16612464.

The previous prime is 33728869. The next prime is 33728897. The reversal of 33728872 is 27882733.

It is a super-2 number, since 2×33728872² = 2275273612784768, which contains 22 as substring.

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, 30928 + ... + 31999.

It is an arithmetic number, because the mean of its divisors is an integer number (4011660).

Almost surely, 2^33728872 is an apocalyptic number.

It is an amenable number.

33728872 is a deficient number, since it is larger than the sum of its proper divisors (30457688).

33728872 is a wasteful number, since it uses less digits than its factorization.

33728872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63000 (or 62996 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 33728872 is about 5807.6563259201. The cubic root of 33728872 is about 323.0977540264.

The spelling of 33728872 in words is "thirty-three million, seven hundred twenty-eight thousand, eight hundred seventy-two".