28827245 has 4 divisors (see below), whose sum is σ = 34592700. Its totient is φ = 23061792.

The previous prime is 28827233. The next prime is 28827251. The reversal of 28827245 is 54272882.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14303524 + 14523721 = 3782^2 + 3811^2 .

It is a cyclic number.

It is not a de Polignac number, because 28827245 - 2⁸ = 28826989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28827199 and 28827208.

It is a congruent number.

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, 2882720 + ... + 2882729.

It is an arithmetic number, because the mean of its divisors is an integer number (8648175).

Almost surely, 2^28827245 is an apocalyptic number.

It is an amenable number.

28827245 is a deficient number, since it is larger than the sum of its proper divisors (5765455).

28827245 is an equidigital number, since it uses as much as digits as its factorization.

28827245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765454.

The product of its digits is 71680, while the sum is 38.

The square root of 28827245 is about 5369.1009489485. The cubic root of 28827245 is about 306.6204003664.

The spelling of 28827245 in words is "twenty-eight million, eight hundred twenty-seven thousand, two hundred forty-five".