28253842 has 8 divisors (see below), whose sum is σ = 42756156. Its totient is φ = 14001792.

The previous prime is 28253831. The next prime is 28253857. The reversal of 28253842 is 24835282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19018321 + 9235521 = 4361^2 + 3039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28253798 and 28253807.

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, 62283 + ... + 62734.

Almost surely, 2^28253842 is an apocalyptic number.

28253842 is a deficient number, since it is larger than the sum of its proper divisors (14502314).

28253842 is a wasteful number, since it uses less digits than its factorization.

28253842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125132.

The product of its digits is 30720, while the sum is 34.

The square root of 28253842 is about 5315.4343190373. The cubic root of 28253842 is about 304.5737735387.

The spelling of 28253842 in words is "twenty-eight million, two hundred fifty-three thousand, eight hundred forty-two".