57861870 has 64 divisors (see below), whose sum is σ = 153812736. Its totient is φ = 13812480.

The previous prime is 57861847. The next prime is 57861871. The reversal of 57861870 is 7816875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57861871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20802 + ... + 23418.

It is an arithmetic number, because the mean of its divisors is an integer number (2403324).

Almost surely, 2^57861870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57861870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76906368).

57861870 is an abundant number, since it is smaller than the sum of its proper divisors (95950866).

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

57861870 is a wasteful number, since it uses less digits than its factorization.

57861870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 57861870 is about 7606.6990212575. The cubic root of 57861870 is about 386.7801300328.

The spelling of 57861870 in words is "fifty-seven million, eight hundred sixty-one thousand, eight hundred seventy".