47402388 has 48 divisors (see below), whose sum is σ = 134070720. Its totient is φ = 14364000.

The previous prime is 47402387. The next prime is 47402389. The reversal of 47402388 is 88320474.

47402388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47402387) and next prime (47402389).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47402387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18763 + ... + 21138.

It is an arithmetic number, because the mean of its divisors is an integer number (2793140).

Almost surely, 2^47402388 is an apocalyptic number.

It is an amenable number.

47402388 is an abundant number, since it is smaller than the sum of its proper divisors (86668332).

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

47402388 is a wasteful number, since it uses less digits than its factorization.

47402388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39925 (or 39917 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 47402388 is about 6884.9392154180. The cubic root of 47402388 is about 361.9095752086.

The spelling of 47402388 in words is "forty-seven million, four hundred two thousand, three hundred eighty-eight".