78268652 has 24 divisors (see below), whose sum is σ = 170768640. Its totient is φ = 30494160.

The previous prime is 78268639. The next prime is 78268667. The reversal of 78268652 is 25686287.

It is a super-2 number, since 2×78268652² = 12251963771794208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126752 + ... + 127367.

It is an arithmetic number, because the mean of its divisors is an integer number (7115360).

Almost surely, 2^78268652 is an apocalyptic number.

It is an amenable number.

78268652 is an abundant number, since it is smaller than the sum of its proper divisors (92499988).

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

78268652 is a wasteful number, since it uses less digits than its factorization.

78268652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254141 (or 254139 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 78268652 is about 8846.9572170323. The cubic root of 78268652 is about 427.7558438008.

The spelling of 78268652 in words is "seventy-eight million, two hundred sixty-eight thousand, six hundred fifty-two".