20726704 has 20 divisors (see below), whose sum is σ = 40403664. Its totient is φ = 10299968.

The previous prime is 20726683. The next prime is 20726711. The reversal of 20726704 is 40762702.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1207 + ... + 6550.

Almost surely, 2^20726704 is an apocalyptic number.

It is an amenable number.

20726704 is a deficient number, since it is larger than the sum of its proper divisors (19676960).

20726704 is a wasteful number, since it uses less digits than its factorization.

20726704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7932 (or 7926 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20726704 is about 4552.6590032639. The cubic root of 20726704 is about 274.6903578187.

The spelling of 20726704 in words is "twenty million, seven hundred twenty-six thousand, seven hundred four".