28423055 has 16 divisors (see below), whose sum is σ = 35735040. Its totient is φ = 21661728.

The previous prime is 28423039. The next prime is 28423081. The reversal of 28423055 is 55032482.

It is a cyclic number.

It is not a de Polignac number, because 28423055 - 2⁴ = 28423039 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, 50204 + ... + 50766.

It is an arithmetic number, because the mean of its divisors is an integer number (2233440).

Almost surely, 2^28423055 is an apocalyptic number.

28423055 is a deficient number, since it is larger than the sum of its proper divisors (7311985).

28423055 is a wasteful number, since it uses less digits than its factorization.

28423055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28423055 is about 5331.3276957996. The cubic root of 28423055 is about 305.1805971552.

It can be divided in two parts, 2 and 8423055, that multiplied together give a triangular number (16846110 = T₅₈₀₄).

The spelling of 28423055 in words is "twenty-eight million, four hundred twenty-three thousand, fifty-five".