33521968 has 20 divisors (see below), whose sum is σ = 65582608. Its totient is φ = 16597440.

The previous prime is 33521959. The next prime is 33521981. The reversal of 33521968 is 86912533.

It is a super-2 number, since 2×33521968² = 2247444677186048, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8523 + ... + 11818.

Almost surely, 2^33521968 is an apocalyptic number.

It is an amenable number.

33521968 is a deficient number, since it is larger than the sum of its proper divisors (32060640).

33521968 is a wasteful number, since it uses less digits than its factorization.

33521968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20452 (or 20446 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 33521968 is about 5789.8158865373. The cubic root of 33521968 is about 322.4357358479.

The spelling of 33521968 in words is "thirty-three million, five hundred twenty-one thousand, nine hundred sixty-eight".