78257074 has 8 divisors (see below), whose sum is σ = 134155008. Its totient is φ = 33538740.

The previous prime is 78257071. The next prime is 78257087. The reversal of 78257074 is 47075287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78257074² = 12248339262082952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78257071) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2794882 + ... + 2794909.

It is an arithmetic number, because the mean of its divisors is an integer number (16769376).

Almost surely, 2^78257074 is an apocalyptic number.

78257074 is a deficient number, since it is larger than the sum of its proper divisors (55897934).

78257074 is a wasteful number, since it uses less digits than its factorization.

78257074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589800.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 78257074 is about 8846.3028435613. The cubic root of 78257074 is about 427.7347506332.

The spelling of 78257074 in words is "seventy-eight million, two hundred fifty-seven thousand, seventy-four".