47660728 has 8 divisors (see below), whose sum is σ = 89363880. Its totient is φ = 23830360.

The previous prime is 47660681. The next prime is 47660729. The reversal of 47660728 is 82706674.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47660729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2978788 + ... + 2978803.

It is an arithmetic number, because the mean of its divisors is an integer number (11170485).

Almost surely, 2^47660728 is an apocalyptic number.

It is an amenable number.

47660728 is a deficient number, since it is larger than the sum of its proper divisors (41703152).

47660728 is a wasteful number, since it uses less digits than its factorization.

47660728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957597 (or 5957593 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 47660728 is about 6903.6749633800. The cubic root of 47660728 is about 362.5658458271.

The spelling of 47660728 in words is "forty-seven million, six hundred sixty thousand, seven hundred twenty-eight".