57205740 has 48 divisors (see below), whose sum is σ = 160570368. Its totient is φ = 15217344.

The previous prime is 57205727. The next prime is 57205741. The reversal of 57205740 is 4750275.

57205740 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

57205740 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 57205698 and 57205707.

It is not an unprimeable number, because it can be changed into a prime (57205741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30469 + ... + 32291.

It is an arithmetic number, because the mean of its divisors is an integer number (3345216).

Almost surely, 2^57205740 is an apocalyptic number.

It is an amenable number.

57205740 is an abundant number, since it is smaller than the sum of its proper divisors (103364628).

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

57205740 is a wasteful number, since it uses less digits than its factorization.

57205740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 57205740 is about 7563.4476265788. The cubic root of 57205740 is about 385.3125925893.

The spelling of 57205740 in words is "fifty-seven million, two hundred five thousand, seven hundred forty".