78851274 has 16 divisors (see below), whose sum is σ = 158118912. Its totient is φ = 26214368.

The previous prime is 78851257. The next prime is 78851299. The reversal of 78851274 is 47215887.

It is a super-2 number, since 2×78851274² = 12435046822846152, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14859 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (9882432).

Almost surely, 2^78851274 is an apocalyptic number.

78851274 is an abundant number, since it is smaller than the sum of its proper divisors (79267638).

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

78851274 is a wasteful number, since it uses less digits than its factorization.

78851274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34701.

The product of its digits is 125440, while the sum is 42.

The square root of 78851274 is about 8879.8239847420. The cubic root of 78851274 is about 428.8146079259.

The spelling of 78851274 in words is "seventy-eight million, eight hundred fifty-one thousand, two hundred seventy-four".