33204840 has 32 divisors (see below), whose sum is σ = 99614880. Its totient is φ = 8854592.

The previous prime is 33204839. The next prime is 33204841. The reversal of 33204840 is 4840233.

It is an interprime number because it is at equal distance from previous prime (33204839) and next prime (33204841).

It is a super-2 number, since 2×33204840² = 2205122798851200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 33204840.

It is not an unprimeable number, because it can be changed into a prime (33204841) 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, 138234 + ... + 138473.

It is an arithmetic number, because the mean of its divisors is an integer number (3112965).

Almost surely, 2^33204840 is an apocalyptic number.

33204840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33204840 is an abundant number, since it is smaller than the sum of its proper divisors (66410040).

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

33204840 is a wasteful number, since it uses less digits than its factorization.

33204840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276721 (or 276717 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 33204840 is about 5762.3640981805. The cubic root of 33204840 is about 321.4157325383.

The spelling of 33204840 in words is "thirty-three million, two hundred four thousand, eight hundred forty".