57280022 has 8 divisors (see below), whose sum is σ = 90442200. Its totient is φ = 27132624.

The previous prime is 57280007. The next prime is 57280061. The reversal of 57280022 is 22008275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 57279973 and 57280000.

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 3 ways as a sum of consecutive naturals, for example, 753647 + ... + 753722.

It is an arithmetic number, because the mean of its divisors is an integer number (11305275).

Almost surely, 2^57280022 is an apocalyptic number.

57280022 is a deficient number, since it is larger than the sum of its proper divisors (33162178).

57280022 is a wasteful number, since it uses less digits than its factorization.

57280022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507390.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 57280022 is about 7568.3566247898. The cubic root of 57280022 is about 385.4792973664.

Adding to 57280022 its reverse (22008275), we get a palindrome (79288297).

The spelling of 57280022 in words is "fifty-seven million, two hundred eighty thousand, twenty-two".