57891340 has 24 divisors (see below), whose sum is σ = 130924080. Its totient is φ = 21375168.

The previous prime is 57891319. The next prime is 57891349. The reversal of 57891340 is 4319875.

57891340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 57891340.

It is not an unprimeable number, because it can be changed into a prime (57891349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 111070 + ... + 111589.

It is an arithmetic number, because the mean of its divisors is an integer number (5455170).

Almost surely, 2^57891340 is an apocalyptic number.

It is an amenable number.

57891340 is an abundant number, since it is smaller than the sum of its proper divisors (73032740).

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

57891340 is a wasteful number, since it uses less digits than its factorization.

57891340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222681 (or 222679 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 57891340 is about 7608.6358829951. The cubic root of 57891340 is about 386.8457833772.

The spelling of 57891340 in words is "fifty-seven million, eight hundred ninety-one thousand, three hundred forty".