28423476 has 36 divisors (see below), whose sum is σ = 73208772. Its totient is φ = 9295104.

The previous prime is 28423459. The next prime is 28423513. The reversal of 28423476 is 67432482.

It can be written as a sum of positive squares in 2 ways, for example, as 23912100 + 4511376 = 4890^2 + 2124^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28423476.

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 11 ways as a sum of consecutive naturals, for example, 5541 + ... + 9356.

It is an arithmetic number, because the mean of its divisors is an integer number (2033577).

Almost surely, 2^28423476 is an apocalyptic number.

It is an amenable number.

28423476 is an abundant number, since it is smaller than the sum of its proper divisors (44785296).

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

28423476 is a wasteful number, since it uses less digits than its factorization.

28423476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960 (or 14955 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 28423476 is about 5331.3671792515. The cubic root of 28423476 is about 305.1821039179.

The spelling of 28423476 in words is "twenty-eight million, four hundred twenty-three thousand, four hundred seventy-six".