28561562 has 4 divisors (see below), whose sum is σ = 42842346. Its totient is φ = 14280780.

The previous prime is 28561531. The next prime is 28561609. The reversal of 28561562 is 26516582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26516582 = 2 ⋅13258291.

It can be written as a sum of positive squares in only one way, i.e., 26925721 + 1635841 = 5189^2 + 1279^2 .

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, 7140389 + ... + 7140392.

Almost surely, 2^28561562 is an apocalyptic number.

28561562 is a deficient number, since it is larger than the sum of its proper divisors (14280784).

28561562 is a wasteful number, since it uses less digits than its factorization.

28561562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14280783.

The product of its digits is 28800, while the sum is 35.

The square root of 28561562 is about 5344.3018253089. The cubic root of 28561562 is about 305.6755143217.

The spelling of 28561562 in words is "twenty-eight million, five hundred sixty-one thousand, five hundred sixty-two".