28013190 has 32 divisors (see below), whose sum is σ = 67530240. Its totient is φ = 7437024.

The previous prime is 28013179. The next prime is 28013221. The reversal of 28013190 is 9131082.

It is a super-2 number, since 2×28013190² = 1569477627952200, 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 28013190.

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, 5217 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (2110320).

Almost surely, 2^28013190 is an apocalyptic number.

28013190 is an abundant number, since it is smaller than the sum of its proper divisors (39517050).

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

28013190 is a wasteful number, since it uses less digits than its factorization.

28013190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 28013190 is about 5292.7488132350. The cubic root of 28013190 is about 303.7065713792.

It can be divided in two parts, 28013 and 190, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 28013190 in words is "twenty-eight million, thirteen thousand, one hundred ninety".