28422190 has 8 divisors (see below), whose sum is σ = 51159960. Its totient is φ = 11368872.

The previous prime is 28422187. The next prime is 28422203. The reversal of 28422190 is 9122482.

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

It is a super-2 number, since 2×28422190² = 1615641768792200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421100 + ... + 1421119.

It is an arithmetic number, because the mean of its divisors is an integer number (6394995).

Almost surely, 2^28422190 is an apocalyptic number.

28422190 is a deficient number, since it is larger than the sum of its proper divisors (22737770).

28422190 is a wasteful number, since it uses less digits than its factorization.

28422190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842226.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28422190 is about 5331.2465709250. The cubic root of 28422190 is about 305.1775012659.

The spelling of 28422190 in words is "twenty-eight million, four hundred twenty-two thousand, one hundred ninety".