33428208 has 40 divisors (see below), whose sum is σ = 94208256. Its totient is φ = 10129600.

The previous prime is 33428189. The next prime is 33428251. The reversal of 33428208 is 80282433.

It is a super-2 number, since 2×33428208² = 2234890180182528, 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 7 ways as a sum of consecutive naturals, for example, 31128 + ... + 32183.

Almost surely, 2^33428208 is an apocalyptic number.

It is an amenable number.

33428208 is an abundant number, since it is smaller than the sum of its proper divisors (60780048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33428208 is a wasteful number, since it uses less digits than its factorization.

33428208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63333 (or 63327 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 33428208 is about 5781.7132409001. The cubic root of 33428208 is about 322.1348405853.

The spelling of 33428208 in words is "thirty-three million, four hundred twenty-eight thousand, two hundred eight".