47928881 has 16 divisors (see below), whose sum is σ = 64353408. Its totient is φ = 34473600.

The previous prime is 47928869. The next prime is 47928889. The reversal of 47928881 is 18882974.

It is not a de Polignac number, because 47928881 - 2⁶ = 47928817 is a prime.

It is a super-2 number, since 2×47928881² = 4594355267824322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47928889) 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, 22940 + ... + 24941.

It is an arithmetic number, because the mean of its divisors is an integer number (4022088).

Almost surely, 2^47928881 is an apocalyptic number.

It is an amenable number.

47928881 is a deficient number, since it is larger than the sum of its proper divisors (16424527).

47928881 is a wasteful number, since it uses less digits than its factorization.

47928881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47912.

The product of its digits is 258048, while the sum is 47.

The square root of 47928881 is about 6923.0687559781. The cubic root of 47928881 is about 363.2445412369.

The spelling of 47928881 in words is "forty-seven million, nine hundred twenty-eight thousand, eight hundred eighty-one".