78590274 has 32 divisors (see below), whose sum is σ = 180556800. Its totient is φ = 22339152.

The previous prime is 78590249. The next prime is 78590279. The reversal of 78590274 is 47209587.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (78590279) 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, 3657 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (5642400).

Almost surely, 2^78590274 is an apocalyptic number.

78590274 is an abundant number, since it is smaller than the sum of its proper divisors (101966526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78590274 is a wasteful number, since it uses less digits than its factorization.

78590274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9614.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 78590274 is about 8865.1155660826. The cubic root of 78590274 is about 428.3409553503.

The spelling of 78590274 in words is "seventy-eight million, five hundred ninety thousand, two hundred seventy-four".