28702250 has 16 divisors (see below), whose sum is σ = 53731080. Its totient is φ = 11480800.

The previous prime is 28702243. The next prime is 28702253. The reversal of 28702250 is 5220782.

It can be written as a sum of positive squares in 4 ways, for example, as 12243001 + 16459249 = 3499^2 + 4057^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28702253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57155 + ... + 57654.

Almost surely, 2^28702250 is an apocalyptic number.

28702250 is a deficient number, since it is larger than the sum of its proper divisors (25028830).

28702250 is a wasteful number, since it uses less digits than its factorization.

28702250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114826 (or 114816 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 28702250 is about 5357.4480865427. The cubic root of 28702250 is about 306.1765893736.

The spelling of 28702250 in words is "twenty-eight million, seven hundred two thousand, two hundred fifty".