57340720 has 40 divisors (see below), whose sum is σ = 134518176. Its totient is φ = 22729728.

The previous prime is 57340693. The next prime is 57340721. The reversal of 57340720 is 2704375.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (57340721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5869 + ... + 12211.

Almost surely, 2^57340720 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 57340720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67259088).

57340720 is an abundant number, since it is smaller than the sum of its proper divisors (77177456).

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

57340720 is a wasteful number, since it uses less digits than its factorization.

57340720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469 (or 6463 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 57340720 is about 7572.3655484928. The cubic root of 57340720 is about 385.6154097593.

The spelling of 57340720 in words is "fifty-seven million, three hundred forty thousand, seven hundred twenty".