33728012 has 6 divisors (see below), whose sum is σ = 59024028. Its totient is φ = 16864004.

The previous prime is 33728003. The next prime is 33728029. The reversal of 33728012 is 21082733.

It is a super-2 number, since 2×33728012² = 2275157586944288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4215998 + ... + 4216005.

It is an arithmetic number, because the mean of its divisors is an integer number (9837338).

Almost surely, 2^33728012 is an apocalyptic number.

It is an amenable number.

33728012 is a deficient number, since it is larger than the sum of its proper divisors (25296016).

33728012 is a wasteful number, since it uses less digits than its factorization.

33728012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432007 (or 8432005 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 33728012 is about 5807.5822852543. The cubic root of 33728012 is about 323.0950079475.

The spelling of 33728012 in words is "thirty-three million, seven hundred twenty-eight thousand, twelve".