20956694 has 16 divisors (see below), whose sum is σ = 34765200. Its totient is φ = 9394560.

The previous prime is 20956687. The next prime is 20956697. The reversal of 20956694 is 49665902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20956697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4919 + ... + 8130.

It is an arithmetic number, because the mean of its divisors is an integer number (2172825).

Almost surely, 2^20956694 is an apocalyptic number.

20956694 is a deficient number, since it is larger than the sum of its proper divisors (13808506).

20956694 is a wasteful number, since it uses less digits than its factorization.

20956694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13135.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 20956694 is about 4577.8481844640. The cubic root of 20956694 is about 275.7026395534.

The spelling of 20956694 in words is "twenty million, nine hundred fifty-six thousand, six hundred ninety-four".