28421576 has 8 divisors (see below), whose sum is σ = 53290470. Its totient is φ = 14210784.

The previous prime is 28421567. The next prime is 28421597. The reversal of 28421576 is 67512482.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 10562500 = 4226^2 + 3250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1776341 + ... + 1776356.

Almost surely, 2^28421576 is an apocalyptic number.

It is an amenable number.

28421576 is a deficient number, since it is larger than the sum of its proper divisors (24868894).

28421576 is a wasteful number, since it uses less digits than its factorization.

28421576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552703 (or 3552699 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 28421576 is about 5331.1889855829. The cubic root of 28421576 is about 305.1753036832.

The spelling of 28421576 in words is "twenty-eight million, four hundred twenty-one thousand, five hundred seventy-six".