28144850 has 12 divisors (see below), whose sum is σ = 52349514. Its totient is φ = 11257920.

The previous prime is 28144849. The next prime is 28144861. The reversal of 28144850 is 5844182.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13082689 + 15062161 = 3617^2 + 3881^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281399 + ... + 281498.

Almost surely, 2^28144850 is an apocalyptic number.

28144850 is a deficient number, since it is larger than the sum of its proper divisors (24204664).

28144850 is a wasteful number, since it uses less digits than its factorization.

28144850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562909 (or 562904 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 28144850 is about 5305.1720047516. The cubic root of 28144850 is about 304.1816276705.

The spelling of 28144850 in words is "twenty-eight million, one hundred forty-four thousand, eight hundred fifty".