47493888 has 144 divisors (see below), whose sum is σ = 140103936. Its totient is φ = 14192640.

The previous prime is 47493877. The next prime is 47493917. The reversal of 47493888 is 88839474.

It is a self number, because there is not a number n which added to its sum of digits gives 47493888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668893 + ... + 668963.

It is an arithmetic number, because the mean of its divisors is an integer number (972944).

Almost surely, 2^47493888 is an apocalyptic number.

47493888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47493888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70051968).

47493888 is an abundant number, since it is smaller than the sum of its proper divisors (92610048).

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

47493888 is a wasteful number, since it uses less digits than its factorization.

47493888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 156 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 47493888 is about 6891.5809506963. The cubic root of 47493888 is about 362.1422881120.

The spelling of 47493888 in words is "forty-seven million, four hundred ninety-three thousand, eight hundred eighty-eight".