28250770 has 32 divisors (see below), whose sum is σ = 54280368. Its totient is φ = 10549248.

The previous prime is 28250731. The next prime is 28250773. The reversal of 28250770 is 7705282.

It can be written as a sum of positive squares in 8 ways, for example, as 9406489 + 18844281 = 3067^2 + 4341^2 .

It is not an unprimeable number, because it can be changed into a prime (28250773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22684 + ... + 23896.

Almost surely, 2^28250770 is an apocalyptic number.

28250770 is a deficient number, since it is larger than the sum of its proper divisors (26029598).

28250770 is a wasteful number, since it uses less digits than its factorization.

28250770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 28250770 is about 5315.1453413806. The cubic root of 28250770 is about 304.5627345144.

The spelling of 28250770 in words is "twenty-eight million, two hundred fifty thousand, seven hundred seventy".