57270720 has 168 divisors, whose sum is σ = 197455536. Its totient is φ = 14057472.

The previous prime is 57270691. The next prime is 57270743. The reversal of 57270720 is 2707275.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162064 + ... + 162416.

Almost surely, 2^57270720 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 57270720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98727768).

57270720 is an abundant number, since it is smaller than the sum of its proper divisors (140184816).

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

57270720 is a wasteful number, since it uses less digits than its factorization.

57270720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 57270720 is about 7567.7420674862. The cubic root of 57270720 is about 385.4584295756.

Adding to 57270720 its reverse (2707275), we get a palindrome (59977995).

The spelling of 57270720 in words is "fifty-seven million, two hundred seventy thousand, seven hundred twenty".