8021726834 has 32 divisors (see below), whose sum is σ = 13616951040. Its totient is φ = 3512246400.

The previous prime is 8021726819. The next prime is 8021726863. The reversal of 8021726834 is 4386271208.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 8021726791 and 8021726800.

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, 14972 + ... + 127544.

It is an arithmetic number, because the mean of its divisors is an integer number (425529720).

Almost surely, 2^8021726834 is an apocalyptic number.

8021726834 is a deficient number, since it is larger than the sum of its proper divisors (5595224206).

8021726834 is a wasteful number, since it uses less digits than its factorization.

8021726834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112706.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 8021726834 is about 89564.0934415126. The cubic root of 8021726834 is about 2001.8089328876.

The spelling of 8021726834 in words is "eight billion, twenty-one million, seven hundred twenty-six thousand, eight hundred thirty-four".