57640326 has 8 divisors (see below), whose sum is σ = 115280664. Its totient is φ = 19213440.

The previous prime is 57640321. The next prime is 57640333. The reversal of 57640326 is 62304675.

It is a sphenic number, since it is the product of 3 distinct primes.

57640326 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4803355 + ... + 4803366.

It is an arithmetic number, because the mean of its divisors is an integer number (14410083).

Almost surely, 2^57640326 is an apocalyptic number.

57640326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57640326 is a wasteful number, since it uses less digits than its factorization.

57640326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9606726.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 57640326 is about 7592.1226280929. The cubic root of 57640326 is about 386.2858585701.

The spelling of 57640326 in words is "fifty-seven million, six hundred forty thousand, three hundred twenty-six".