20726774 has 16 divisors (see below), whose sum is σ = 33686928. Its totient is φ = 9526272.

The previous prime is 20726773. The next prime is 20726779. The reversal of 20726774 is 47762702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20726773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5627 + ... + 8550.

It is an arithmetic number, because the mean of its divisors is an integer number (2105433).

Almost surely, 2^20726774 is an apocalyptic number.

20726774 is a deficient number, since it is larger than the sum of its proper divisors (12960154).

20726774 is a wasteful number, since it uses less digits than its factorization.

20726774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14239.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 20726774 is about 4552.6666910724. Note that the first 4 decimals coincide. The cubic root of 20726774 is about 274.6906670542.

The spelling of 20726774 in words is "twenty million, seven hundred twenty-six thousand, seven hundred seventy-four".