78850780 has 24 divisors (see below), whose sum is σ = 165968208. Its totient is φ = 31467648.

The previous prime is 78850771. The next prime is 78850781. The reversal of 78850780 is 8705887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78850781) 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, 4827 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (6915342).

Almost surely, 2^78850780 is an apocalyptic number.

It is an amenable number.

78850780 is an abundant number, since it is smaller than the sum of its proper divisors (87117428).

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

78850780 is a wasteful number, since it uses less digits than its factorization.

78850780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093 (or 9091 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 78850780 is about 8879.7961688318. The cubic root of 78850780 is about 428.8137124221.

The spelling of 78850780 in words is "seventy-eight million, eight hundred fifty thousand, seven hundred eighty".