57473320 has 64 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 21804288.

The previous prime is 57473291. The next prime is 57473329. The reversal of 57473320 is 2337475.

It is not an unprimeable number, because it can be changed into a prime (57473329) 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, 164506 + ... + 164854.

It is an arithmetic number, because the mean of its divisors is an integer number (2126250).

Almost surely, 2^57473320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57473320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68040000).

57473320 is an abundant number, since it is smaller than the sum of its proper divisors (78606680).

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

57473320 is a wasteful number, since it uses less digits than its factorization.

57473320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 57473320 is about 7581.1160128308. The cubic root of 57473320 is about 385.9124252096.

The spelling of 57473320 in words is "fifty-seven million, four hundred seventy-three thousand, three hundred twenty".