28423255 has 16 divisors (see below), whose sum is σ = 39622464. Its totient is φ = 19169280.

The previous prime is 28423243. The next prime is 28423261. The reversal of 28423255 is 55232482.

It is not a de Polignac number, because 28423255 - 2⁹ = 28422743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4522 + ... + 8791.

It is an arithmetic number, because the mean of its divisors is an integer number (2476404).

Almost surely, 2^28423255 is an apocalyptic number.

28423255 is a deficient number, since it is larger than the sum of its proper divisors (11199209).

28423255 is a wasteful number, since it uses less digits than its factorization.

28423255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13386.

The product of its digits is 19200, while the sum is 31.

The square root of 28423255 is about 5331.3464528203. The cubic root of 28423255 is about 305.1813129588.

The spelling of 28423255 in words is "twenty-eight million, four hundred twenty-three thousand, two hundred fifty-five".