47172744 has 48 divisors (see below), whose sum is σ = 134487600. Its totient is φ = 14896224.

The previous prime is 47172737. The next prime is 47172779. The reversal of 47172744 is 44727174.

47172744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 47172699 and 47172708.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15874 + ... + 18609.

It is an arithmetic number, because the mean of its divisors is an integer number (2801825).

Almost surely, 2^47172744 is an apocalyptic number.

It is an amenable number.

47172744 is an abundant number, since it is smaller than the sum of its proper divisors (87314856).

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

47172744 is a wasteful number, since it uses less digits than its factorization.

47172744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34514 (or 34507 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 47172744 is about 6868.2416963878. The cubic root of 47172744 is about 361.3241972730.

The spelling of 47172744 in words is "forty-seven million, one hundred seventy-two thousand, seven hundred forty-four".