28857562 has 4 divisors (see below), whose sum is σ = 43286346. Its totient is φ = 14428780.

The previous prime is 28857547. The next prime is 28857589. The reversal of 28857562 is 26575882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26575882 = 2 ⋅13287941.

It can be written as a sum of positive squares in only one way, i.e., 25090081 + 3767481 = 5009^2 + 1941^2 .

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, 7214389 + ... + 7214392.

Almost surely, 2^28857562 is an apocalyptic number.

28857562 is a deficient number, since it is larger than the sum of its proper divisors (14428784).

28857562 is a wasteful number, since it uses less digits than its factorization.

28857562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14428783.

The product of its digits is 268800, while the sum is 43.

The square root of 28857562 is about 5371.9234916369. The cubic root of 28857562 is about 306.7278514235.

The spelling of 28857562 in words is "twenty-eight million, eight hundred fifty-seven thousand, five hundred sixty-two".