47544840 has 256 divisors, whose sum is σ = 191232000. Its totient is φ = 10264320.

The previous prime is 47544839. The next prime is 47544851. The reversal of 47544840 is 4844574.

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 = 47544795 and 47544804.

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, 143475 + ... + 143805.

It is an arithmetic number, because the mean of its divisors is an integer number (747000).

Almost surely, 2^47544840 is an apocalyptic number.

47544840 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 47544840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95616000).

47544840 is an abundant number, since it is smaller than the sum of its proper divisors (143687160).

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

47544840 is a wasteful number, since it uses less digits than its factorization.

47544840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 47544840 is about 6895.2766441964. The cubic root of 47544840 is about 362.2717453265.

It can be divided in two parts, 47544 and 840, that added together give a palindrome (48384).

The spelling of 47544840 in words is "forty-seven million, five hundred forty-four thousand, eight hundred forty".