20963846 has 8 divisors (see below), whose sum is σ = 31476504. Its totient is φ = 10471680.

The previous prime is 20963837. The next prime is 20963849. The reversal of 20963846 is 64836902.

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

It is a super-2 number, since 2×20963846² = 878965678223432, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (3934563).

Almost surely, 2^20963846 is an apocalyptic number.

20963846 is a deficient number, since it is larger than the sum of its proper divisors (10512658).

20963846 is a wasteful number, since it uses less digits than its factorization.

20963846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 20963846 is about 4578.6292708626. The cubic root of 20963846 is about 275.7339994776.

The spelling of 20963846 in words is "twenty million, nine hundred sixty-three thousand, eight hundred forty-six".