28355190 has 32 divisors (see below), whose sum is σ = 69715296. Its totient is φ = 7376640.

The previous prime is 28355161. The next prime is 28355213. The reversal of 28355190 is 9155382.

It is a super-2 number, since 2×28355190² = 1608033599872200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10297 + ... + 12756.

It is an arithmetic number, because the mean of its divisors is an integer number (2178603).

Almost surely, 2^28355190 is an apocalyptic number.

28355190 is an abundant number, since it is smaller than the sum of its proper divisors (41360106).

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

28355190 is a wasteful number, since it uses less digits than its factorization.

28355190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23104.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 28355190 is about 5324.9591547729. The cubic root of 28355190 is about 304.9375129535.

The spelling of 28355190 in words is "twenty-eight million, three hundred fifty-five thousand, one hundred ninety".