78994384 has 20 divisors (see below), whose sum is σ = 174916384. Its totient is φ = 33854688.

The previous prime is 78994369. The next prime is 78994403. The reversal of 78994384 is 48349987.

It is a super-2 number, since 2×78994384² = 12480225407078912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352542 + ... + 352765.

Almost surely, 2^78994384 is an apocalyptic number.

It is an amenable number.

78994384 is an abundant number, since it is smaller than the sum of its proper divisors (95922000).

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

78994384 is a wasteful number, since it uses less digits than its factorization.

78994384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705322 (or 705316 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 78994384 is about 8887.8784870181. The cubic root of 78994384 is about 429.0738747993.

The spelling of 78994384 in words is "seventy-eight million, nine hundred ninety-four thousand, three hundred eighty-four".