78886275 has 24 divisors (see below), whose sum is σ = 140459760. Its totient is φ = 38835840.

The previous prime is 78886267. The next prime is 78886277. The reversal of 78886275 is 57268887.

It is not a de Polignac number, because 78886275 - 2³ = 78886267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78886277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39480 + ... + 41429.

It is an arithmetic number, because the mean of its divisors is an integer number (5852490).

Almost surely, 2^78886275 is an apocalyptic number.

78886275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78886275 is a deficient number, since it is larger than the sum of its proper divisors (61573485).

78886275 is a wasteful number, since it uses less digits than its factorization.

78886275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80935 (or 80930 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 51.

The square root of 78886275 is about 8881.7945821776. The cubic root of 78886275 is about 428.8780468497.

The spelling of 78886275 in words is "seventy-eight million, eight hundred eighty-six thousand, two hundred seventy-five".