33999228 has 36 divisors (see below), whose sum is σ = 86119488. Its totient is φ = 11309760.

The previous prime is 33999193. The next prime is 33999289. The reversal of 33999228 is 82299933.

33999228 is a `hidden beast` number, since 339 + 99 + 228 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33813 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (2392208).

Almost surely, 2^33999228 is an apocalyptic number.

It is an amenable number.

33999228 is an abundant number, since it is smaller than the sum of its proper divisors (52120260).

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

33999228 is a wasteful number, since it uses less digits than its factorization.

33999228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1949 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 33999228 is about 5830.8856960157. The cubic root of 33999228 is about 323.9587281677.

The spelling of 33999228 in words is "thirty-three million, nine hundred ninety-nine thousand, two hundred twenty-eight".