826806840 has 64 divisors (see below), whose sum is σ = 2484725760. Its totient is φ = 220099200.

The previous prime is 826806823. The next prime is 826806863. The reversal of 826806840 is 48608628.

It is a junction number, because it is equal to n+sod(n) for n = 826806792 and 826806801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67165 + ... + 78515.

It is an arithmetic number, because the mean of its divisors is an integer number (38823840).

Almost surely, 2^826806840 is an apocalyptic number.

It is an amenable number.

826806840 is an abundant number, since it is smaller than the sum of its proper divisors (1657918920).

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

826806840 is a wasteful number, since it uses less digits than its factorization.

826806840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11972 (or 11968 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 826806840 is about 28754.2490773103. The cubic root of 826806840 is about 938.5729213163.

The spelling of 826806840 in words is "eight hundred twenty-six million, eight hundred six thousand, eight hundred forty".