28523022 has 16 divisors (see below), whose sum is σ = 62232192. Its totient is φ = 8643320.

The previous prime is 28522993. The next prime is 28523081. The reversal of 28523022 is 22032582.

It is a junction number, because it is equal to n+sod(n) for n = 28522983 and 28523001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216018 + ... + 216149.

It is an arithmetic number, because the mean of its divisors is an integer number (3889512).

Almost surely, 2^28523022 is an apocalyptic number.

28523022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28523022 is an abundant number, since it is smaller than the sum of its proper divisors (33709170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28523022 is a wasteful number, since it uses less digits than its factorization.

28523022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432183.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 28523022 is about 5340.6948986064. The cubic root of 28523022 is about 305.5379630545.

The spelling of 28523022 in words is "twenty-eight million, five hundred twenty-three thousand, twenty-two".