47311722 has 64 divisors (see below), whose sum is σ = 109278720. Its totient is φ = 15163200.

The previous prime is 47311721. The next prime is 47311741. The reversal of 47311722 is 22711374.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47311721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174447 + ... + 174717.

It is an arithmetic number, because the mean of its divisors is an integer number (1707480).

Almost surely, 2^47311722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47311722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54639360).

47311722 is an abundant number, since it is smaller than the sum of its proper divisors (61966998).

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

47311722 is a wasteful number, since it uses less digits than its factorization.

47311722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 390 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 47311722 is about 6878.3516920844. The cubic root of 47311722 is about 361.6786878527.

The spelling of 47311722 in words is "forty-seven million, three hundred eleven thousand, seven hundred twenty-two".