826065840 has 40 divisors (see below), whose sum is σ = 2560804848. Its totient is φ = 220284160.

The previous prime is 826065839. The next prime is 826065857. The reversal of 826065840 is 48560628.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720731 + ... + 1721210.

Almost surely, 2^826065840 is an apocalyptic number.

826065840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

826065840 is an abundant number, since it is smaller than the sum of its proper divisors (1734739008).

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

826065840 is a wasteful number, since it uses less digits than its factorization.

826065840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441957 (or 3441951 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 826065840 is about 28741.3611368703. The cubic root of 826065840 is about 938.2924485494.

The spelling of 826065840 in words is "eight hundred twenty-six million, sixty-five thousand, eight hundred forty".