20726868 has 24 divisors (see below), whose sum is σ = 48454560. Its totient is φ = 6895840.

The previous prime is 20726837. The next prime is 20726897. The reversal of 20726868 is 86862702.

It is a congruent number.

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, 6598 + ... + 9218.

It is an arithmetic number, because the mean of its divisors is an integer number (2018940).

Almost surely, 2^20726868 is an apocalyptic number.

It is an amenable number.

20726868 is an abundant number, since it is smaller than the sum of its proper divisors (27727692).

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

20726868 is a wasteful number, since it uses less digits than its factorization.

20726868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 20726868 is about 4552.6770146805. The cubic root of 20726868 is about 274.6910823124.

The spelling of 20726868 in words is "twenty million, seven hundred twenty-six thousand, eight hundred sixty-eight".