47772428 has 12 divisors (see below), whose sum is σ = 91201992. Its totient is φ = 21714720.

The previous prime is 47772409. The next prime is 47772433. The reversal of 47772428 is 82427774.

47772428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 542825 + ... + 542912.

It is an arithmetic number, because the mean of its divisors is an integer number (7600166).

Almost surely, 2^47772428 is an apocalyptic number.

It is an amenable number.

47772428 is a deficient number, since it is larger than the sum of its proper divisors (43429564).

47772428 is a wasteful number, since it uses less digits than its factorization.

47772428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085752 (or 1085750 counting only the distinct ones).

The product of its digits is 175616, while the sum is 41.

The square root of 47772428 is about 6911.7601231524. The cubic root of 47772428 is about 362.8488671576.

The spelling of 47772428 in words is "forty-seven million, seven hundred seventy-two thousand, four hundred twenty-eight".