20023669 has 4 divisors (see below), whose sum is σ = 20045344. Its totient is φ = 20001996.

The previous prime is 20023651. The next prime is 20023693. The reversal of 20023669 is 96632002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20023669 - 2¹⁷ = 19892597 is a prime.

It is a super-2 number, since 2×20023669² = 801894640443122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387 + ... + 11320.

It is an arithmetic number, because the mean of its divisors is an integer number (5011336).

Almost surely, 2^20023669 is an apocalyptic number.

It is an amenable number.

20023669 is a deficient number, since it is larger than the sum of its proper divisors (21675).

20023669 is an equidigital number, since it uses as much as digits as its factorization.

20023669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21674.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20023669 is about 4474.7814471771. The cubic root of 20023669 is about 271.5487986972.

It can be divided in two parts, 2002 and 3669, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 20023669 in words is "twenty million, twenty-three thousand, six hundred sixty-nine".