78294868 has 6 divisors (see below), whose sum is σ = 137016026. Its totient is φ = 39147432.

The previous prime is 78294847. The next prime is 78294899. The reversal of 78294868 is 86849287.

It can be written as a sum of positive squares in only one way, i.e., 56280004 + 22014864 = 7502^2 + 4692^2 .

It is a super-2 number, since 2×78294868² = 12260172710274848, 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 as a sum of consecutive naturals, namely, 9786855 + ... + 9786862.

Almost surely, 2^78294868 is an apocalyptic number.

It is an amenable number.

78294868 is a deficient number, since it is larger than the sum of its proper divisors (58721158).

78294868 is a wasteful number, since it uses less digits than its factorization.

78294868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573721 (or 19573719 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 78294868 is about 8848.4387323414. The cubic root of 78294868 is about 427.8035972547.

The spelling of 78294868 in words is "seventy-eight million, two hundred ninety-four thousand, eight hundred sixty-eight".