57870020 has 48 divisors (see below), whose sum is σ = 132711600. Its totient is φ = 21067776.

The previous prime is 57870013. The next prime is 57870031. The reversal of 57870020 is 2007875.

It can be written as a sum of positive squares in 8 ways, for example, as 11303044 + 46566976 = 3362^2 + 6824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17456 + ... + 20504.

It is an arithmetic number, because the mean of its divisors is an integer number (2764825).

Almost surely, 2^57870020 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 57870020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66355800).

57870020 is an abundant number, since it is smaller than the sum of its proper divisors (74841580).

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

57870020 is a wasteful number, since it uses less digits than its factorization.

57870020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 57870020 is about 7607.2347144018. The cubic root of 57870020 is about 386.7982888541.

Adding to 57870020 its reverse (2007875), we get a palindrome (59877895).

The spelling of 57870020 in words is "fifty-seven million, eight hundred seventy thousand, twenty".