47344640 has 88 divisors (see below), whose sum is σ = 129894432. Its totient is φ = 16220160.

The previous prime is 47344631. The next prime is 47344663. The reversal of 47344640 is 4644374.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 47344597 and 47344606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35180 + ... + 36500.

Almost surely, 2^47344640 is an apocalyptic number.

47344640 is a gapful number since it is divisible by the number (40) 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 47344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64947216).

47344640 is an abundant number, since it is smaller than the sum of its proper divisors (82549792).

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

47344640 is a wasteful number, since it uses less digits than its factorization.

47344640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 47344640 is about 6880.7441458028. The cubic root of 47344640 is about 361.7625499373.

The spelling of 47344640 in words is "forty-seven million, three hundred forty-four thousand, six hundred forty".