78568530 has 32 divisors (see below), whose sum is σ = 191764800. Its totient is φ = 20596032.

The previous prime is 78568507. The next prime is 78568573. The reversal of 78568530 is 3586587.

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, 20425 + ... + 23964.

It is an arithmetic number, because the mean of its divisors is an integer number (5992650).

Almost surely, 2^78568530 is an apocalyptic number.

78568530 is an abundant number, since it is smaller than the sum of its proper divisors (113196270).

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

78568530 is a wasteful number, since it uses less digits than its factorization.

78568530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44458.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 78568530 is about 8863.8891012918. The cubic root of 78568530 is about 428.3014478966.

The spelling of 78568530 in words is "seventy-eight million, five hundred sixty-eight thousand, five hundred thirty".