20726834 has 8 divisors (see below), whose sum is σ = 32726640. Its totient is φ = 9817956.

The previous prime is 20726833. The next prime is 20726837. The reversal of 20726834 is 43862702.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20726834.

It is not an unprimeable number, because it can be changed into a prime (20726833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272684 + ... + 272759.

It is an arithmetic number, because the mean of its divisors is an integer number (4090830).

Almost surely, 2^20726834 is an apocalyptic number.

20726834 is a deficient number, since it is larger than the sum of its proper divisors (11999806).

20726834 is a wasteful number, since it uses less digits than its factorization.

20726834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545464.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20726834 is about 4552.6732806122. The cubic root of 20726834 is about 274.6909321128.

The spelling of 20726834 in words is "twenty million, seven hundred twenty-six thousand, eight hundred thirty-four".