33162728 has 8 divisors (see below), whose sum is σ = 62180130. Its totient is φ = 16581360.

The previous prime is 33162721. The next prime is 33162737. The reversal of 33162728 is 82726133.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 10903204 = 4718^2 + 3302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 33162694 and 33162703.

It is not an unprimeable number, because it can be changed into a prime (33162721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072663 + ... + 2072678.

Almost surely, 2^33162728 is an apocalyptic number.

It is an amenable number.

33162728 is a deficient number, since it is larger than the sum of its proper divisors (29017402).

33162728 is a wasteful number, since it uses less digits than its factorization.

33162728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145347 (or 4145343 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 33162728 is about 5758.7088830744. The cubic root of 33162728 is about 321.2797966780.

The spelling of 33162728 in words is "thirty-three million, one hundred sixty-two thousand, seven hundred twenty-eight".