47391344 has 120 divisors (see below), whose sum is σ = 124679520. Its totient is φ = 16980480.

The previous prime is 47391341. The next prime is 47391349. The reversal of 47391344 is 44319374.

It is a super-2 number, since 2×47391344² = 4491878972252672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47391341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176042 + ... + 176310.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^47391344 is an apocalyptic number.

47391344 is a gapful number since it is divisible by the number (44) 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 47391344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62339760).

47391344 is an abundant number, since it is smaller than the sum of its proper divisors (77288176).

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

47391344 is a wasteful number, since it uses less digits than its factorization.

47391344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 302 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 47391344 is about 6884.1371282100. The cubic root of 47391344 is about 361.8814666402.

The spelling of 47391344 in words is "forty-seven million, three hundred ninety-one thousand, three hundred forty-four".