28645250 has 32 divisors (see below), whose sum is σ = 54054000. Its totient is φ = 11366400.

The previous prime is 28645237. The next prime is 28645283. The reversal of 28645250 is 5254682.

28645250 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 8 ways, for example, as 247009 + 28398241 = 497^2 + 5329^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36866 + ... + 37634.

Almost surely, 2^28645250 is an apocalyptic number.

28645250 is a deficient number, since it is larger than the sum of its proper divisors (25408750).

28645250 is a wasteful number, since it uses less digits than its factorization.

28645250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 28645250 is about 5352.1257459069. The cubic root of 28645250 is about 305.9737756443.

The spelling of 28645250 in words is "twenty-eight million, six hundred forty-five thousand, two hundred fifty".