333978864 has 60 divisors (see below), whose sum is σ = 879719736. Its totient is φ = 109181696.

The previous prime is 333978863. The next prime is 333978901. The reversal of 333978864 is 468879333.

It is a super-2 number, since 2×333978864² = 223083763197460992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333978863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133594 + ... + 136070.

Almost surely, 2^333978864 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 333978864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439859868).

333978864 is an abundant number, since it is smaller than the sum of its proper divisors (545740872).

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

333978864 is a wasteful number, since it uses less digits than its factorization.

333978864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594 (or 2535 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 333978864 is about 18275.0886181162. The cubic root of 333978864 is about 693.8085716963.

The spelling of 333978864 in words is "three hundred thirty-three million, nine hundred seventy-eight thousand, eight hundred sixty-four".