47544240 has 160 divisors (see below), whose sum is σ = 160275456. Its totient is φ = 11612160.

The previous prime is 47544187. The next prime is 47544247. The reversal of 47544240 is 4244574.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 47544198 and 47544207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47544247) 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, 175305 + ... + 175575.

Almost surely, 2^47544240 is an apocalyptic number.

47544240 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 47544240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80137728).

47544240 is an abundant number, since it is smaller than the sum of its proper divisors (112731216).

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

47544240 is a wasteful number, since it uses less digits than its factorization.

47544240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 47544240 is about 6895.2331360151. The cubic root of 47544240 is about 362.2702214039.

The spelling of 47544240 in words is "forty-seven million, five hundred forty-four thousand, two hundred forty".