826388868 has 24 divisors (see below), whose sum is σ = 1947335040. Its totient is φ = 272735200.

The previous prime is 826388863. The next prime is 826388903. The reversal of 826388868 is 868883628.

It is a super-2 number, since 2×826388868² = 1365837122308642848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (826388863) 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 7 ways as a sum of consecutive naturals, for example, 339708 + ... + 342131.

It is an arithmetic number, because the mean of its divisors is an integer number (81138960).

Almost surely, 2^826388868 is an apocalyptic number.

It is an amenable number.

826388868 is an abundant number, since it is smaller than the sum of its proper divisors (1120946172).

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

826388868 is a wasteful number, since it uses less digits than its factorization.

826388868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681947 (or 681945 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 57.

The square root of 826388868 is about 28746.9801544440. The cubic root of 826388868 is about 938.4147371206.

The spelling of 826388868 in words is "eight hundred twenty-six million, three hundred eighty-eight thousand, eight hundred sixty-eight".