78057370 has 32 divisors (see below), whose sum is σ = 149299200. Its totient is φ = 29281536.

The previous prime is 78057347. The next prime is 78057373. The reversal of 78057370 is 7375087.

It is a super-2 number, since 2×78057370² = 12185906022633800, which contains 22 as substring.

Together with 71241830 it forms an amicable pair .

It is not an unprimeable number, because it can be changed into a prime (78057373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60391 + ... + 61669.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^78057370 is an apocalyptic number.

78057370 is a deficient number, since it is larger than the sum of its proper divisors (71241830).

78057370 is a wasteful number, since it uses less digits than its factorization.

78057370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 78057370 is about 8835.0082059951. The cubic root of 78057370 is about 427.3705956724.

The spelling of 78057370 in words is "seventy-eight million, fifty-seven thousand, three hundred seventy".