57707244 has 144 divisors (see below), whose sum is σ = 176117760. Its totient is φ = 15586560.

The previous prime is 57707239. The next prime is 57707261. The reversal of 57707244 is 44270775.

It is a happy number.

57707244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 57707199 and 57707208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648352 + ... + 648440.

It is an arithmetic number, because the mean of its divisors is an integer number (1223040).

Almost surely, 2^57707244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57707244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

57707244 is an abundant number, since it is smaller than the sum of its proper divisors (118410516).

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

57707244 is a wasteful number, since it uses less digits than its factorization.

57707244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 215 counting only the distinct ones).

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

The square root of 57707244 is about 7596.5284176392. The cubic root of 57707244 is about 386.4352879826.

The spelling of 57707244 in words is "fifty-seven million, seven hundred seven thousand, two hundred forty-four".