20248469 has 4 divisors (see below), whose sum is σ = 20257644. Its totient is φ = 20239296.

The previous prime is 20248457. The next prime is 20248477. The reversal of 20248469 is 96484202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12888100 + 7360369 = 3590^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 20248469 - 2¹⁶ = 20182933 is a prime.

It is a super-2 number, since 2×20248469² = 820000993687922, 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 (20248489) 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, 959 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (5064411).

Almost surely, 2^20248469 is an apocalyptic number.

It is an amenable number.

20248469 is a deficient number, since it is larger than the sum of its proper divisors (9175).

20248469 is an equidigital number, since it uses as much as digits as its factorization.

20248469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9174.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 20248469 is about 4499.8298856735. The cubic root of 20248469 is about 272.5612195872.

The spelling of 20248469 in words is "twenty million, two hundred forty-eight thousand, four hundred sixty-nine".