57286380 has 48 divisors (see below), whose sum is σ = 161489664. Its totient is φ = 15172800.

The previous prime is 57286337. The next prime is 57286393. The reversal of 57286380 is 8368275.

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, 5899 + ... + 12221.

It is an arithmetic number, because the mean of its divisors is an integer number (3364368).

Almost surely, 2^57286380 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 57286380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80744832).

57286380 is an abundant number, since it is smaller than the sum of its proper divisors (104203284).

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

57286380 is a wasteful number, since it uses less digits than its factorization.

57286380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486 (or 6484 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 57286380 is about 7568.7766514807. The cubic root of 57286380 is about 385.4935593878.

The spelling of 57286380 in words is "fifty-seven million, two hundred eighty-six thousand, three hundred eighty".