57280590 has 48 divisors (see below), whose sum is σ = 150321600. Its totient is φ = 15132096.

The previous prime is 57280583. The next prime is 57280627. The reversal of 57280590 is 9508275.

57280590 is a `hidden beast` number, since 572 + 80 + 5 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6891 + ... + 12729.

It is an arithmetic number, because the mean of its divisors is an integer number (3131700).

Almost surely, 2^57280590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57280590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75160800).

57280590 is an abundant number, since it is smaller than the sum of its proper divisors (93041010).

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

57280590 is a wasteful number, since it uses less digits than its factorization.

57280590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961 (or 5958 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 57280590 is about 7568.3941493556. The cubic root of 57280590 is about 385.4805715251.

The spelling of 57280590 in words is "fifty-seven million, two hundred eighty thousand, five hundred ninety".