20252669 has 4 divisors (see below), whose sum is σ = 20310396. Its totient is φ = 20194944.

The previous prime is 20252663. The next prime is 20252707. The reversal of 20252669 is 96625202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14668900 + 5583769 = 3830^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 20252669 - 2²⁴ = 3475453 is a prime.

It is a super-2 number, since 2×20252669² = 820341203247122, 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 (20252663) 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, 28334 + ... + 29039.

It is an arithmetic number, because the mean of its divisors is an integer number (5077599).

Almost surely, 2^20252669 is an apocalyptic number.

It is an amenable number.

20252669 is a deficient number, since it is larger than the sum of its proper divisors (57727).

20252669 is an equidigital number, since it uses as much as digits as its factorization.

20252669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57726.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20252669 is about 4500.2965457845. The cubic root of 20252669 is about 272.5800634478.

The spelling of 20252669 in words is "twenty million, two hundred fifty-two thousand, six hundred sixty-nine".