47772878 has 16 divisors (see below), whose sum is σ = 75669120. Its totient is φ = 22557816.

The previous prime is 47772869. The next prime is 47772911. The reversal of 47772878 is 87827774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11375 + ... + 14997.

It is an arithmetic number, because the mean of its divisors is an integer number (4729320).

Almost surely, 2^47772878 is an apocalyptic number.

47772878 is a deficient number, since it is larger than the sum of its proper divisors (27896242).

47772878 is a wasteful number, since it uses less digits than its factorization.

47772878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991.

The product of its digits is 1229312, while the sum is 50.

The square root of 47772878 is about 6911.7926762888. The cubic root of 47772878 is about 362.8500064582.

The spelling of 47772878 in words is "forty-seven million, seven hundred seventy-two thousand, eight hundred seventy-eight".