47404728 has 48 divisors (see below), whose sum is σ = 146730480. Its totient is φ = 13544064.

The previous prime is 47404691. The next prime is 47404739. The reversal of 47404728 is 82740474.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47404692 and 47404701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46525 + ... + 47532.

It is an arithmetic number, because the mean of its divisors is an integer number (3056885).

Almost surely, 2^47404728 is an apocalyptic number.

It is an amenable number.

47404728 is an abundant number, since it is smaller than the sum of its proper divisors (99325752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47404728 is a wasteful number, since it uses less digits than its factorization.

47404728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94076 (or 94069 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 47404728 is about 6885.1091494616. The cubic root of 47404728 is about 361.9155302846.

The spelling of 47404728 in words is "forty-seven million, four hundred four thousand, seven hundred twenty-eight".