20625726 has 64 divisors (see below), whose sum is σ = 49268736. Its totient is φ = 5683200.

The previous prime is 20625721. The next prime is 20625727. The reversal of 20625726 is 62752602.

It is a junction number, because it is equal to n+sod(n) for n = 20625693 and 20625702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34486 + ... + 35078.

It is an arithmetic number, because the mean of its divisors is an integer number (769824).

Almost surely, 2^20625726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20625726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24634368).

20625726 is an abundant number, since it is smaller than the sum of its proper divisors (28643010).

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

20625726 is a wasteful number, since it uses less digits than its factorization.

20625726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 20625726 is about 4541.5554604122. Note that the first 3 decimals coincide. The cubic root of 20625726 is about 274.2435453371.

The spelling of 20625726 in words is "twenty million, six hundred twenty-five thousand, seven hundred twenty-six".