827428688 has 30 divisors (see below), whose sum is σ = 1656556362. Its totient is φ = 400361280.

The previous prime is 827428687. The next prime is 827428697. The reversal of 827428688 is 886824728.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 724040464 + 103388224 = 26908^2 + 10168^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827428687) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11531 + ... + 42282.

Almost surely, 2^827428688 is an apocalyptic number.

It is an amenable number.

827428688 is an abundant number, since it is smaller than the sum of its proper divisors (829127674).

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

827428688 is a wasteful number, since it uses less digits than its factorization.

827428688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53883 (or 53846 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The square root of 827428688 is about 28765.0601946181. The cubic root of 827428688 is about 938.8081650695.

The spelling of 827428688 in words is "eight hundred twenty-seven million, four hundred twenty-eight thousand, six hundred eighty-eight".