33128264 has 32 divisors (see below), whose sum is σ = 68040000. Its totient is φ = 15028032.

The previous prime is 33128201. The next prime is 33128273. The reversal of 33128264 is 46282133.

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, 3437 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2126250).

Almost surely, 2^33128264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33128264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34020000).

33128264 is an abundant number, since it is smaller than the sum of its proper divisors (34911736).

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

33128264 is a wasteful number, since it uses less digits than its factorization.

33128264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477 (or 5473 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 33128264 is about 5755.7157678259. The cubic root of 33128264 is about 321.1684626043.

The spelling of 33128264 in words is "thirty-three million, one hundred twenty-eight thousand, two hundred sixty-four".