20267623 has 12 divisors (see below), whose sum is σ = 22329648. Its totient is φ = 18358560.

The previous prime is 20267617. The next prime is 20267627. The reversal of 20267623 is 32676202.

It is a de Polignac number, because none of the positive numbers 2^k-20267623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20267591 and 20267600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20267627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7083 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (1860804).

Almost surely, 2^20267623 is an apocalyptic number.

20267623 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20267623 is a deficient number, since it is larger than the sum of its proper divisors (2062025).

20267623 is a wasteful number, since it uses less digits than its factorization.

20267623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20267623 is about 4501.9576852743. The cubic root of 20267623 is about 272.6471354213.

The spelling of 20267623 in words is "twenty million, two hundred sixty-seven thousand, six hundred twenty-three".