20726255 has 8 divisors (see below), whose sum is σ = 27132624. Its totient is φ = 15073600.

The previous prime is 20726239. The next prime is 20726257. The reversal of 20726255 is 55262702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20726255 - 2⁴ = 20726239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20726257) 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, 188366 + ... + 188475.

It is an arithmetic number, because the mean of its divisors is an integer number (3391578).

Almost surely, 2^20726255 is an apocalyptic number.

20726255 is a deficient number, since it is larger than the sum of its proper divisors (6406369).

20726255 is a wasteful number, since it uses less digits than its factorization.

20726255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376857.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 20726255 is about 4552.6096911552. The cubic root of 20726255 is about 274.6883742767.

Adding to 20726255 its reverse (55262702), we get a palindrome (75988957).

It can be divided in two parts, 207 and 26255, that added together give a palindrome (26462).

The spelling of 20726255 in words is "twenty million, seven hundred twenty-six thousand, two hundred fifty-five".