28609190 has 16 divisors (see below), whose sum is σ = 52694928. Its totient is φ = 11177376.

The previous prime is 28609169. The next prime is 28609213. The reversal of 28609190 is 9190682.

It is a super-2 number, since 2×28609190² = 1636971504912200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28609190.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32837 + ... + 33696.

It is an arithmetic number, because the mean of its divisors is an integer number (3293433).

Almost surely, 2^28609190 is an apocalyptic number.

28609190 is a deficient number, since it is larger than the sum of its proper divisors (24085738).

28609190 is a wasteful number, since it uses less digits than its factorization.

28609190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66583.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 28609190 is about 5348.7559301206. The cubic root of 28609190 is about 305.8453302955.

The spelling of 28609190 in words is "twenty-eight million, six hundred nine thousand, one hundred ninety".