33521872 has 10 divisors (see below), whose sum is σ = 64948658. Its totient is φ = 16760928.

The previous prime is 33521863. The next prime is 33521893. The reversal of 33521872 is 27812533.

It can be written as a sum of positive squares in only one way, i.e., 16842816 + 16679056 = 4104^2 + 4084^2 .

It is a super-2 number, since 2×33521872² = 2247431804768768, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1047543 + ... + 1047574.

Almost surely, 2^33521872 is an apocalyptic number.

It is an amenable number.

33521872 is a deficient number, since it is larger than the sum of its proper divisors (31426786).

33521872 is a wasteful number, since it uses less digits than its factorization.

33521872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095125 (or 2095119 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 33521872 is about 5789.8075961123. The cubic root of 33521872 is about 322.4354280512.

The spelling of 33521872 in words is "thirty-three million, five hundred twenty-one thousand, eight hundred seventy-two".