8281250 has 32 divisors (see below), whose sum is σ = 15820272. Its totient is φ = 3250000.

The previous prime is 8281249. The next prime is 8281291. The reversal of 8281250 is 521828.

It can be written as a sum of positive squares in 8 ways, for example, as 7006609 + 1274641 = 2647^2 + 1129^2 .

It is a nialpdrome in base 5.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156224 + ... + 156276.

Almost surely, 2^8281250 is an apocalyptic number.

8281250 is a deficient number, since it is larger than the sum of its proper divisors (7539022).

8281250 is an frugal number, since it uses more digits than its factorization.

8281250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 8281250 is about 2877.7161083053. The cubic root of 8281250 is about 202.3168083642.

It can be divided in two parts, 8 and 281250, that multiplied together give a square (2250000 = 1500²).

The spelling of 8281250 in words is "eight million, two hundred eighty-one thousand, two hundred fifty".