20223623 has 10 divisors (see below), whose sum is σ = 23595624. Its totient is φ = 17332476.

The previous prime is 20223617. The next prime is 20223629. The reversal of 20223623 is 32632202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20223617) and next prime (20223629).

It is not a de Polignac number, because 20223623 - 2⁸ = 20223367 is a prime.

It is a super-2 number, since 2×20223623² = 817989854492258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223595 and 20223604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223629) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1811 + ... + 6612.

Almost surely, 2^20223623 is an apocalyptic number.

20223623 is a deficient number, since it is larger than the sum of its proper divisors (3372001).

20223623 is an frugal number, since it uses more digits than its factorization.

20223623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20223623 is about 4497.0682672159. The cubic root of 20223623 is about 272.4496913551.

Adding to 20223623 its reverse (32632202), we get a palindrome (52855825).

The spelling of 20223623 in words is "twenty million, two hundred twenty-three thousand, six hundred twenty-three".