57824420 has 24 divisors (see below), whose sum is σ = 121745400. Its totient is φ = 23069952.

The previous prime is 57824411. The next prime is 57824423. The reversal of 57824420 is 2442875.

It can be written as a sum of positive squares in 4 ways, for example, as 12773476 + 45050944 = 3574^2 + 6712^2 .

It is not an unprimeable number, because it can be changed into a prime (57824423) 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, 4646 + ... + 11714.

It is an arithmetic number, because the mean of its divisors is an integer number (5072725).

Almost surely, 2^57824420 is an apocalyptic number.

It is an amenable number.

57824420 is an abundant number, since it is smaller than the sum of its proper divisors (63920980).

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

57824420 is a wasteful number, since it uses less digits than its factorization.

57824420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7487 (or 7485 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 57824420 is about 7604.2369768439. The cubic root of 57824420 is about 386.6966666511.

The spelling of 57824420 in words is "fifty-seven million, eight hundred twenty-four thousand, four hundred twenty".