57473280 has 144 divisors (see below), whose sum is σ = 204072960. Its totient is φ = 15316992.

The previous prime is 57473261. The next prime is 57473291. The reversal of 57473280 is 8237475.

57473280 is a `hidden beast` number, since 574 + 7 + 3 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33729 + ... + 35391.

Almost surely, 2^57473280 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 57473280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102036480).

57473280 is an abundant number, since it is smaller than the sum of its proper divisors (146599680).

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

57473280 is a wasteful number, since it uses less digits than its factorization.

57473280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 57473280 is about 7581.1133746964. The cubic root of 57473280 is about 385.9123356811.

The spelling of 57473280 in words is "fifty-seven million, four hundred seventy-three thousand, two hundred eighty".