47757240 has 96 divisors (see below), whose sum is σ = 158202720. Its totient is φ = 12489984.

The previous prime is 47757211. The next prime is 47757247. The reversal of 47757240 is 4275774.

It is a happy number.

47757240 is a `hidden beast` number, since 47 + 7 + 572 + 40 = 666.

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 = 47757195 and 47757204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47757247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17829 + ... + 20331.

It is an arithmetic number, because the mean of its divisors is an integer number (1647945).

Almost surely, 2^47757240 is an apocalyptic number.

47757240 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 47757240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79101360).

47757240 is an abundant number, since it is smaller than the sum of its proper divisors (110445480).

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

47757240 is a wasteful number, since it uses less digits than its factorization.

47757240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2566 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 47757240 is about 6910.6613287007. The cubic root of 47757240 is about 362.8104102976.

The spelling of 47757240 in words is "forty-seven million, seven hundred fifty-seven thousand, two hundred forty".