57401840 has 40 divisors (see below), whose sum is σ = 133786080. Its totient is φ = 22904576.

The previous prime is 57401821. The next prime is 57401849. The reversal of 57401840 is 4810475.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57401849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51206 + ... + 52314.

It is an arithmetic number, because the mean of its divisors is an integer number (3344652).

Almost surely, 2^57401840 is an apocalyptic number.

It is an amenable number.

57401840 is an abundant number, since it is smaller than the sum of its proper divisors (76384240).

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

57401840 is a wasteful number, since it uses less digits than its factorization.

57401840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 57401840 is about 7576.4002006230. The cubic root of 57401840 is about 385.7523714434.

The spelling of 57401840 in words is "fifty-seven million, four hundred one thousand, eight hundred forty".