78945700 has 36 divisors (see below), whose sum is σ = 171846640. Its totient is φ = 31479840.

The previous prime is 78945641. The next prime is 78945707. The reversal of 78945700 is 754987.

It is not an unprimeable number, because it can be changed into a prime (78945707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36859 + ... + 38941.

Almost surely, 2^78945700 is an apocalyptic number.

It is an amenable number.

78945700 is an abundant number, since it is smaller than the sum of its proper divisors (92900940).

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

78945700 is a wasteful number, since it uses less digits than its factorization.

78945700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 78945700 is about 8885.1392785932. The cubic root of 78945700 is about 428.9857110413.

The spelling of 78945700 in words is "seventy-eight million, nine hundred forty-five thousand, seven hundred".