47512440 has 256 divisors, whose sum is σ = 172368000. Its totient is φ = 11612160.

The previous prime is 47512397. The next prime is 47512471. The reversal of 47512440 is 4421574.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1158820 + ... + 1158860.

Almost surely, 2^47512440 is an apocalyptic number.

47512440 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 47512440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86184000).

47512440 is an abundant number, since it is smaller than the sum of its proper divisors (124855560).

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

47512440 is a wasteful number, since it uses less digits than its factorization.

47512440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 47512440 is about 6892.9268094185. The cubic root of 47512440 is about 362.1894351550.

The spelling of 47512440 in words is "forty-seven million, five hundred twelve thousand, four hundred forty".