28551023 has 2 divisors, whose sum is σ = 28551024. Its totient is φ = 28551022.

The previous prime is 28551001. The next prime is 28551101. The reversal of 28551023 is 32015582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28551023 - 2⁶ = 28550959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28550983 and 28551001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28551223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14275511 + 14275512.

It is an arithmetic number, because the mean of its divisors is an integer number (14275512).

Almost surely, 2^28551023 is an apocalyptic number.

28551023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28551023 is an equidigital number, since it uses as much as digits as its factorization.

28551023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28551023 is about 5343.3157308922. The cubic root of 28551023 is about 305.6379123800.

The spelling of 28551023 in words is "twenty-eight million, five hundred fifty-one thousand, twenty-three".