33657028 has 6 divisors (see below), whose sum is σ = 58899806. Its totient is φ = 16828512.

The previous prime is 33657017. The next prime is 33657061. The reversal of 33657028 is 82075633.

It can be written as a sum of positive squares in only one way, i.e., 22353984 + 11303044 = 4728^2 + 3362^2 .

It is a super-2 number, since 2×33657028² = 2265591067585568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33656984 and 33657002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4207125 + ... + 4207132.

Almost surely, 2^33657028 is an apocalyptic number.

It is an amenable number.

33657028 is a deficient number, since it is larger than the sum of its proper divisors (25242778).

33657028 is a wasteful number, since it uses less digits than its factorization.

33657028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414261 (or 8414259 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 33657028 is about 5801.4677453210. The cubic root of 33657028 is about 322.8681867495.

The spelling of 33657028 in words is "thirty-three million, six hundred fifty-seven thousand, twenty-eight".