47891268 has 18 divisors (see below), whose sum is σ = 121058574. Its totient is φ = 15963744.

The previous prime is 47891251. The next prime is 47891269. The reversal of 47891268 is 86219874.

It can be written as a sum of positive squares in only one way, i.e., 38044224 + 9847044 = 6168^2 + 3138^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (47891269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665121 + ... + 665192.

Almost surely, 2^47891268 is an apocalyptic number.

It is an amenable number.

47891268 is an abundant number, since it is smaller than the sum of its proper divisors (73167306).

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

47891268 is a wasteful number, since it uses less digits than its factorization.

47891268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330323 (or 1330318 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 47891268 is about 6920.3517251654. The cubic root of 47891268 is about 363.1494956038.

The spelling of 47891268 in words is "forty-seven million, eight hundred ninety-one thousand, two hundred sixty-eight".