20967123 has 16 divisors (see below), whose sum is σ = 29329920. Its totient is φ = 13307616.

The previous prime is 20967109. The next prime is 20967139. The reversal of 20967123 is 32176902.

It is not a de Polignac number, because 20967123 - 2⁵ = 20967091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20967823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3208 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (1833120).

Almost surely, 2^20967123 is an apocalyptic number.

20967123 is a deficient number, since it is larger than the sum of its proper divisors (8362797).

20967123 is a wasteful number, since it uses less digits than its factorization.

20967123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20967123 is about 4578.9871150725. The cubic root of 20967123 is about 275.7483660088.

The spelling of 20967123 in words is "twenty million, nine hundred sixty-seven thousand, one hundred twenty-three".