20965626 has 48 divisors (see below), whose sum is σ = 52172640. Its totient is φ = 6017760.

The previous prime is 20965621. The next prime is 20965649. The reversal of 20965626 is 62656902.

20965626 is a `hidden beast` number, since 2 + 0 + 96 + 562 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20965621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (1086930).

Almost surely, 2^20965626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20965626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26086320).

20965626 is an abundant number, since it is smaller than the sum of its proper divisors (31207014).

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

20965626 is a wasteful number, since it uses less digits than its factorization.

20965626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611 (or 5608 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 20965626 is about 4578.8236480563. The cubic root of 20965626 is about 275.7418032720.

The spelling of 20965626 in words is "twenty million, nine hundred sixty-five thousand, six hundred twenty-six".