78578248 has 32 divisors (see below), whose sum is σ = 171149760. Its totient is φ = 33122880.

The previous prime is 78578239. The next prime is 78578249. The reversal of 78578248 is 84287587.

It is not an unprimeable number, because it can be changed into a prime (78578249) 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, 8086 + ... + 14917.

It is an arithmetic number, because the mean of its divisors is an integer number (5348430).

Almost surely, 2^78578248 is an apocalyptic number.

It is an amenable number.

78578248 is an abundant number, since it is smaller than the sum of its proper divisors (92571512).

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

78578248 is a wasteful number, since it uses less digits than its factorization.

78578248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23077 (or 23073 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 78578248 is about 8864.4372635831. The cubic root of 78578248 is about 428.3191057802.

The spelling of 78578248 in words is "seventy-eight million, five hundred seventy-eight thousand, two hundred forty-eight".