33728956 has 6 divisors (see below), whose sum is σ = 59025680. Its totient is φ = 16864476.

The previous prime is 33728923. The next prime is 33728957. The reversal of 33728956 is 65982733.

It is a super-2 number, since 2×33728956² = 2275284945699872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33728957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4216116 + ... + 4216123.

Almost surely, 2^33728956 is an apocalyptic number.

It is an amenable number.

33728956 is a deficient number, since it is larger than the sum of its proper divisors (25296724).

33728956 is a wasteful number, since it uses less digits than its factorization.

33728956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8432243 (or 8432241 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 33728956 is about 5807.6635577485. The cubic root of 33728956 is about 323.0980222455.

The spelling of 33728956 in words is "thirty-three million, seven hundred twenty-eight thousand, nine hundred fifty-six".