28567634 has 16 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 13864032.

The previous prime is 28567619. The next prime is 28567657. The reversal of 28567634 is 43676582.

It is a happy number.

It is a super-2 number, since 2×28567634² = 1632219424715912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28567591 and 28567600.

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, 10742 + ... + 13134.

It is an arithmetic number, because the mean of its divisors is an integer number (2757888).

Almost surely, 2^28567634 is an apocalyptic number.

28567634 is a deficient number, since it is larger than the sum of its proper divisors (15558574).

28567634 is a wasteful number, since it uses less digits than its factorization.

28567634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569.

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

The square root of 28567634 is about 5344.8698768071. The cubic root of 28567634 is about 305.6971743206.

The spelling of 28567634 in words is "twenty-eight million, five hundred sixty-seven thousand, six hundred thirty-four".