20690726 has 16 divisors (see below), whose sum is σ = 35575296. Its totient is φ = 8841096.

The previous prime is 20690701. The next prime is 20690737. The reversal of 20690726 is 62709602.

It is a super-2 number, since 2×20690726² = 856212284814152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20690692 and 20690701.

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, 3125 + ... + 7151.

It is an arithmetic number, because the mean of its divisors is an integer number (2223456).

Almost surely, 2^20690726 is an apocalyptic number.

20690726 is a deficient number, since it is larger than the sum of its proper divisors (14884570).

20690726 is a wasteful number, since it uses less digits than its factorization.

20690726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20690726 is about 4548.7059698336. The cubic root of 20690726 is about 274.5313273315.

The spelling of 20690726 in words is "twenty million, six hundred ninety thousand, seven hundred twenty-six".