28563476 has 12 divisors (see below), whose sum is σ = 50127840. Its totient is φ = 14241240.

The previous prime is 28563467. The next prime is 28563497. The reversal of 28563476 is 67436582.

It is a happy number.

It is a super-2 number, since 2×28563476² = 1631744322405152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8510 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (4177320).

Almost surely, 2^28563476 is an apocalyptic number.

It is an amenable number.

28563476 is a deficient number, since it is larger than the sum of its proper divisors (21564364).

28563476 is a wasteful number, since it uses less digits than its factorization.

28563476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20254 (or 20252 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 28563476 is about 5344.4808915366. The cubic root of 28563476 is about 305.6823422613.

The spelling of 28563476 in words is "twenty-eight million, five hundred sixty-three thousand, four hundred seventy-six".