33393828 has 24 divisors (see below), whose sum is σ = 83913088. Its totient is φ = 10274976.

The previous prime is 33393827. The next prime is 33393839. The reversal of 33393828 is 82839333.

It is a super-2 number, since 2×33393828² = 2230295496987168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (33393827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106876 + ... + 107187.

Almost surely, 2^33393828 is an apocalyptic number.

It is an amenable number.

33393828 is an abundant number, since it is smaller than the sum of its proper divisors (50519260).

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

33393828 is a wasteful number, since it uses less digits than its factorization.

33393828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214083 (or 214081 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 33393828 is about 5778.7393088804. The cubic root of 33393828 is about 322.0243670718.

The spelling of 33393828 in words is "thirty-three million, three hundred ninety-three thousand, eight hundred twenty-eight".