827499280 has 20 divisors (see below), whose sum is σ = 1923936012. Its totient is φ = 330999680.

The previous prime is 827499271. The next prime is 827499289. The reversal of 827499280 is 82994728.

It is an interprime number because it is at equal distance from previous prime (827499271) and next prime (827499289).

It can be written as a sum of positive squares in 2 ways, for example, as 351037696 + 476461584 = 18736^2 + 21828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (827499289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5171791 + ... + 5171950.

Almost surely, 2^827499280 is an apocalyptic number.

827499280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

827499280 is an abundant number, since it is smaller than the sum of its proper divisors (1096436732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

827499280 is a wasteful number, since it uses less digits than its factorization.

827499280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343754 (or 10343748 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 827499280 is about 28766.2872126383. The cubic root of 827499280 is about 938.8348624201.

It can be divided in two parts, 82749 and 9280, that added together give a palindrome (92029).

The spelling of 827499280 in words is "eight hundred twenty-seven million, four hundred ninety-nine thousand, two hundred eighty".