78799530 has 32 divisors (see below), whose sum is σ = 189431424. Its totient is φ = 20978496.

The previous prime is 78799481. The next prime is 78799547. The reversal of 78799530 is 3599787.

It is a self number, because there is not a number n which added to its sum of digits gives 78799530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20004 + ... + 23616.

It is an arithmetic number, because the mean of its divisors is an integer number (5919732).

Almost surely, 2^78799530 is an apocalyptic number.

78799530 is an abundant number, since it is smaller than the sum of its proper divisors (110631894).

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

78799530 is a wasteful number, since it uses less digits than its factorization.

78799530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 78799530 is about 8876.9099353322. The cubic root of 78799530 is about 428.7207881001.

The spelling of 78799530 in words is "seventy-eight million, seven hundred ninety-nine thousand, five hundred thirty".