78995290 has 16 divisors (see below), whose sum is σ = 155118240. Its totient is φ = 28725520.

The previous prime is 78995269. The next prime is 78995291. The reversal of 78995290 is 9259987.

It is not an unprimeable number, because it can be changed into a prime (78995291) 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, 358960 + ... + 359179.

It is an arithmetic number, because the mean of its divisors is an integer number (9694890).

Almost surely, 2^78995290 is an apocalyptic number.

78995290 is a deficient number, since it is larger than the sum of its proper divisors (76122950).

78995290 is a wasteful number, since it uses less digits than its factorization.

78995290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718157.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 78995290 is about 8887.9294551656. The cubic root of 78995290 is about 429.0755151667.

The spelling of 78995290 in words is "seventy-eight million, nine hundred ninety-five thousand, two hundred ninety".