9780078872 has 64 divisors (see below), whose sum is σ = 19056696000. Its totient is φ = 4701805056.

The previous prime is 9780078839. The next prime is 9780078887. The reversal of 9780078872 is 2788700879.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10641629 + ... + 10642547.

It is an arithmetic number, because the mean of its divisors is an integer number (297760875).

Almost surely, 2^9780078872 is an apocalyptic number.

It is an amenable number.

9780078872 is a deficient number, since it is larger than the sum of its proper divisors (9276617128).

9780078872 is a wasteful number, since it uses less digits than its factorization.

9780078872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 56.

The square root of 9780078872 is about 98894.2812906793. The cubic root of 9780078872 is about 2138.5239531743.

The spelling of 9780078872 in words is "nine billion, seven hundred eighty million, seventy-eight thousand, eight hundred seventy-two".