78274868 has 24 divisors (see below), whose sum is σ = 165759552. Its totient is φ = 31572864.

The previous prime is 78274837. The next prime is 78274879. The reversal of 78274868 is 86847287.

It is a super-2 number, since 2×78274868² = 12253909920834848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81746 + ... + 82697.

It is an arithmetic number, because the mean of its divisors is an integer number (6906648).

Almost surely, 2^78274868 is an apocalyptic number.

It is an amenable number.

78274868 is an abundant number, since it is smaller than the sum of its proper divisors (87484684).

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

78274868 is a wasteful number, since it uses less digits than its factorization.

78274868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164471 (or 164469 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 78274868 is about 8847.3085172837. The cubic root of 78274868 is about 427.7671674486.

The spelling of 78274868 in words is "seventy-eight million, two hundred seventy-four thousand, eight hundred sixty-eight".