57282730 has 32 divisors (see below), whose sum is σ = 106997760. Its totient is φ = 22056960.

The previous prime is 57282727. The next prime is 57282749. The reversal of 57282730 is 3728275.

It is a super-2 number, since 2×57282730² = 6562622312505800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 79311 + ... + 80029.

It is an arithmetic number, because the mean of its divisors is an integer number (3343680).

Almost surely, 2^57282730 is an apocalyptic number.

57282730 is a deficient number, since it is larger than the sum of its proper divisors (49715030).

57282730 is a wasteful number, since it uses less digits than its factorization.

57282730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 57282730 is about 7568.5355254501. The cubic root of 57282730 is about 385.4853719770.

The spelling of 57282730 in words is "fifty-seven million, two hundred eighty-two thousand, seven hundred thirty".