728986250 has 20 divisors (see below), whose sum is σ = 1366414170. Its totient is φ = 291594000.

The previous prime is 728986207. The next prime is 728986259. The reversal of 728986250 is 52689827.

It can be written as a sum of positive squares in 5 ways, for example, as 11978521 + 717007729 = 3461^2 + 26777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 728986195 and 728986204.

It is not an unprimeable number, because it can be changed into a prime (728986259) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 290345 + ... + 292844.

Almost surely, 2^728986250 is an apocalyptic number.

728986250 is a deficient number, since it is larger than the sum of its proper divisors (637427920).

728986250 is an equidigital number, since it uses as much as digits as its factorization.

728986250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583211 (or 583196 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 728986250 is about 26999.7453691697. The cubic root of 728986250 is about 899.9943415282.

It can be divided in two parts, 7289 and 86250, that added together give a palindrome (93539).

The spelling of 728986250 in words is "seven hundred twenty-eight million, nine hundred eighty-six thousand, two hundred fifty".