47044728 has 48 divisors (see below), whose sum is σ = 131812200. Its totient is φ = 15140160.

The previous prime is 47044721. The next prime is 47044747. The reversal of 47044728 is 82744074.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 = 47044692 and 47044701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47044721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9178 + ... + 13353.

Almost surely, 2^47044728 is an apocalyptic number.

It is an amenable number.

47044728 is an abundant number, since it is smaller than the sum of its proper divisors (84767472).

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

47044728 is a wasteful number, since it uses less digits than its factorization.

47044728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22572 (or 22565 counting only the distinct ones).

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

The square root of 47044728 is about 6858.9159493319. The cubic root of 47044728 is about 360.9970508477.

The spelling of 47044728 in words is "forty-seven million, forty-four thousand, seven hundred twenty-eight".