20934965 has 8 divisors (see below), whose sum is σ = 25204608. Its totient is φ = 16692880.

The previous prime is 20934961. The next prime is 20935009. The reversal of 20934965 is 56943902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20934965 - 2² = 20934961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20934961) 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, 5177 + ... + 8286.

It is an arithmetic number, because the mean of its divisors is an integer number (3150576).

Almost surely, 2^20934965 is an apocalyptic number.

It is an amenable number.

20934965 is a deficient number, since it is larger than the sum of its proper divisors (4269643).

20934965 is a wasteful number, since it uses less digits than its factorization.

20934965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13779.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20934965 is about 4575.4742923548. The cubic root of 20934965 is about 275.6073189468.

The spelling of 20934965 in words is "twenty million, nine hundred thirty-four thousand, nine hundred sixty-five".