28090623 has 8 divisors (see below), whose sum is σ = 40859136. Its totient is φ = 17024600.

The previous prime is 28090609. The next prime is 28090627. The reversal of 28090623 is 32609082.

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

It is a cyclic number.

It is not a de Polignac number, because 28090623 - 2⁵ = 28090591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28090627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425583 + ... + 425648.

It is an arithmetic number, because the mean of its divisors is an integer number (5107392).

Almost surely, 2^28090623 is an apocalyptic number.

28090623 is a deficient number, since it is larger than the sum of its proper divisors (12768513).

28090623 is a wasteful number, since it uses less digits than its factorization.

28090623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851245.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 28090623 is about 5300.0587732590. The cubic root of 28090623 is about 303.9861453462.

The spelling of 28090623 in words is "twenty-eight million, ninety thousand, six hundred twenty-three".