33228572 has 12 divisors (see below), whose sum is σ = 62623176. Its totient is φ = 15336240.

The previous prime is 33228563. The next prime is 33228589. The reversal of 33228572 is 27582233.

It is a super-2 number, since 2×33228572² = 2208275994318368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319454 + ... + 319557.

It is an arithmetic number, because the mean of its divisors is an integer number (5218598).

Almost surely, 2^33228572 is an apocalyptic number.

It is an amenable number.

33228572 is a deficient number, since it is larger than the sum of its proper divisors (29394604).

33228572 is a wasteful number, since it uses less digits than its factorization.

33228572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639028 (or 639026 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 33228572 is about 5764.4229546417. The cubic root of 33228572 is about 321.4922878602.

The spelling of 33228572 in words is "thirty-three million, two hundred twenty-eight thousand, five hundred seventy-two".