57447648 has 72 divisors (see below), whose sum is σ = 164573136. Its totient is φ = 19008000.

The previous prime is 57447647. The next prime is 57447653. The reversal of 57447648 is 84674475.

57447648 is a `hidden beast` number, since 574 + 4 + 76 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57447647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42828 + ... + 44148.

It is an arithmetic number, because the mean of its divisors is an integer number (2285738).

Almost surely, 2^57447648 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 57447648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82286568).

57447648 is an abundant number, since it is smaller than the sum of its proper divisors (107125488).

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

57447648 is a wasteful number, since it uses less digits than its factorization.

57447648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1477 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 57447648 is about 7579.4226693067. The cubic root of 57447648 is about 385.8549572735.

The spelling of 57447648 in words is "fifty-seven million, four hundred forty-seven thousand, six hundred forty-eight".