20964893 has 8 divisors (see below), whose sum is σ = 22240512. Its totient is φ = 19694016.

The previous prime is 20964877. The next prime is 20964917. The reversal of 20964893 is 39846902.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20964893 - 2⁴ = 20964877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20964893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20964803) 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, 12596 + ... + 14162.

It is an arithmetic number, because the mean of its divisors is an integer number (2780064).

Almost surely, 2^20964893 is an apocalyptic number.

It is an amenable number.

20964893 is a deficient number, since it is larger than the sum of its proper divisors (1275619).

20964893 is a wasteful number, since it uses less digits than its factorization.

20964893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 20964893 is about 4578.7436049641. The cubic root of 20964893 is about 275.7385897405.

The spelling of 20964893 in words is "twenty million, nine hundred sixty-four thousand, eight hundred ninety-three".