78484275 has 24 divisors (see below), whose sum is σ = 144179760. Its totient is φ = 41857920.

The previous prime is 78484261. The next prime is 78484277. The reversal of 78484275 is 57248487.

It is not a de Polignac number, because 78484275 - 2²⁶ = 11375411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78484275.

It is not an unprimeable number, because it can be changed into a prime (78484277) 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, 57462 + ... + 58811.

It is an arithmetic number, because the mean of its divisors is an integer number (6007490).

Almost surely, 2^78484275 is an apocalyptic number.

78484275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78484275 is a deficient number, since it is larger than the sum of its proper divisors (65695485).

78484275 is a wasteful number, since it uses less digits than its factorization.

78484275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116292 (or 116281 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 78484275 is about 8859.1351158000. The cubic root of 78484275 is about 428.1482930833.

The spelling of 78484275 in words is "seventy-eight million, four hundred eighty-four thousand, two hundred seventy-five".