78940570 has 16 divisors (see below), whose sum is σ = 146677248. Its totient is φ = 30557520.

The previous prime is 78940567. The next prime is 78940579. The reversal of 78940570 is 7504987.

It is a super-2 number, since 2×78940570² = 12463227183849800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78940579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127014 + ... + 127633.

It is an arithmetic number, because the mean of its divisors is an integer number (9167328).

Almost surely, 2^78940570 is an apocalyptic number.

78940570 is a deficient number, since it is larger than the sum of its proper divisors (67736678).

78940570 is a wasteful number, since it uses less digits than its factorization.

78940570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254685.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 78940570 is about 8884.8505896273. The cubic root of 78940570 is about 428.9764188131.

The spelling of 78940570 in words is "seventy-eight million, nine hundred forty thousand, five hundred seventy".