78057884 has 6 divisors (see below), whose sum is σ = 136601304. Its totient is φ = 39028940.

The previous prime is 78057877. The next prime is 78057887. The reversal of 78057884 is 48875087.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9757232 + ... + 9757239.

It is an arithmetic number, because the mean of its divisors is an integer number (22766884).

Almost surely, 2^78057884 is an apocalyptic number.

It is an amenable number.

78057884 is a deficient number, since it is larger than the sum of its proper divisors (58543420).

78057884 is a wasteful number, since it uses less digits than its factorization.

78057884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19514475 (or 19514473 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 78057884 is about 8835.0372947713. The cubic root of 78057884 is about 427.3715337346.

The spelling of 78057884 in words is "seventy-eight million, fifty-seven thousand, eight hundred eighty-four".