57169840 has 80 divisors (see below), whose sum is σ = 163614528. Its totient is φ = 18091008.

The previous prime is 57169831. The next prime is 57169873. The reversal of 57169840 is 4896175.

57169840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 57169793 and 57169802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3354 + ... + 11206.

Almost surely, 2^57169840 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 57169840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81807264).

57169840 is an abundant number, since it is smaller than the sum of its proper divisors (106444688).

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

57169840 is a wasteful number, since it uses less digits than its factorization.

57169840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7886 (or 7880 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 57169840 is about 7561.0739977863. The cubic root of 57169840 is about 385.2319735424.

The spelling of 57169840 in words is "fifty-seven million, one hundred sixty-nine thousand, eight hundred forty".