57821694 has 32 divisors (see below), whose sum is σ = 133981440. Its totient is φ = 16293312.

The previous prime is 57821683. The next prime is 57821723. The reversal of 57821694 is 49612875.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 6364 + ... + 12495.

It is an arithmetic number, because the mean of its divisors is an integer number (4186920).

Almost surely, 2^57821694 is an apocalyptic number.

57821694 is an abundant number, since it is smaller than the sum of its proper divisors (76159746).

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

57821694 is a wasteful number, since it uses less digits than its factorization.

57821694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18944.

The product of its digits is 120960, while the sum is 42.

The square root of 57821694 is about 7604.0577325531. The cubic root of 57821694 is about 386.6905899123.

The spelling of 57821694 in words is "fifty-seven million, eight hundred twenty-one thousand, six hundred ninety-four".