28357190 has 16 divisors (see below), whose sum is σ = 54045792. Its totient is φ = 10675584.

The previous prime is 28357171. The next prime is 28357193. The reversal of 28357190 is 9175382.

It is a super-2 number, since 2×28357190² = 1608260449392200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28357190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28357193) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 83234 + ... + 83573.

It is an arithmetic number, because the mean of its divisors is an integer number (3377862).

Almost surely, 2^28357190 is an apocalyptic number.

28357190 is a deficient number, since it is larger than the sum of its proper divisors (25688602).

28357190 is a wasteful number, since it uses less digits than its factorization.

28357190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166831.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28357190 is about 5325.1469463293. The cubic root of 28357190 is about 304.9446822547.

The spelling of 28357190 in words is "twenty-eight million, three hundred fifty-seven thousand, one hundred ninety".