47287928 has 8 divisors (see below), whose sum is σ = 88664880. Its totient is φ = 23643960.

The previous prime is 47287909. The next prime is 47287937. The reversal of 47287928 is 82978274.

It is a happy number.

47287928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×47287928² = 4472296269066368, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 2955488 + ... + 2955503.

It is an arithmetic number, because the mean of its divisors is an integer number (11083110).

Almost surely, 2^47287928 is an apocalyptic number.

It is an amenable number.

47287928 is a deficient number, since it is larger than the sum of its proper divisors (41376952).

47287928 is a wasteful number, since it uses less digits than its factorization.

47287928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910997 (or 5910993 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 47287928 is about 6876.6218450632. The cubic root of 47287928 is about 361.6180458989.

The spelling of 47287928 in words is "forty-seven million, two hundred eighty-seven thousand, nine hundred twenty-eight".