78868224 has 54 divisors (see below), whose sum is σ = 227403176. Its totient is φ = 26288640.

The previous prime is 78868217. The next prime is 78868241. The reversal of 78868224 is 42286887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78868224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14812 + ... + 19419.

Almost surely, 2^78868224 is an apocalyptic number.

It is an amenable number.

78868224 is an abundant number, since it is smaller than the sum of its proper divisors (148534952).

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

78868224 is a wasteful number, since it uses less digits than its factorization.

78868224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34253 (or 34236 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 78868224 is about 8880.7783442669. The cubic root of 78868224 is about 428.8453319565.

It can be divided in two parts, 7886 and 8224, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 78868224 in words is "seventy-eight million, eight hundred sixty-eight thousand, two hundred twenty-four".