57870428 has 144 divisors (see below), whose sum is σ = 143001600. Its totient is φ = 19958400.

The previous prime is 57870427. The next prime is 57870433. The reversal of 57870428 is 82407875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57870427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1866773 + ... + 1866803.

Almost surely, 2^57870428 is an apocalyptic number.

57870428 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57870428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71500800).

57870428 is an abundant number, since it is smaller than the sum of its proper divisors (85131172).

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

57870428 is a wasteful number, since it uses less digits than its factorization.

57870428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 57870428 is about 7607.2615309321. The cubic root of 57870428 is about 386.7991978644.

The spelling of 57870428 in words is "fifty-seven million, eight hundred seventy thousand, four hundred twenty-eight".