20712726 has 32 divisors (see below), whose sum is σ = 46178400. Its totient is φ = 6881760.

The previous prime is 20712709. The next prime is 20712751. The reversal of 20712726 is 62721702.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20712726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28860 + ... + 29568.

It is an arithmetic number, because the mean of its divisors is an integer number (1443075).

Almost surely, 2^20712726 is an apocalyptic number.

20712726 is an abundant number, since it is smaller than the sum of its proper divisors (25465674).

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

20712726 is a wasteful number, since it uses less digits than its factorization.

20712726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20712726 is about 4551.1235975306. The cubic root of 20712726 is about 274.6285939337.

The spelling of 20712726 in words is "twenty million, seven hundred twelve thousand, seven hundred twenty-six".