47728291 has 16 divisors (see below), whose sum is σ = 52739680. Its totient is φ = 42923520.

The previous prime is 47728283. The next prime is 47728319. The reversal of 47728291 is 19282774.

It is a cyclic number.

It is not a de Polignac number, because 47728291 - 2³ = 47728283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47728211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110011 + ... + 110443.

It is an arithmetic number, because the mean of its divisors is an integer number (3296230).

Almost surely, 2^47728291 is an apocalyptic number.

47728291 is a deficient number, since it is larger than the sum of its proper divisors (5011389).

47728291 is a wasteful number, since it uses less digits than its factorization.

47728291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its digits is 56448, while the sum is 40.

The square root of 47728291 is about 6908.5664938538. The cubic root of 47728291 is about 362.7370872337.

The spelling of 47728291 in words is "forty-seven million, seven hundred twenty-eight thousand, two hundred ninety-one".