20502369 has 16 divisors (see below), whose sum is σ = 30513600. Its totient is φ = 13605408.

The previous prime is 20502367. The next prime is 20502379. The reversal of 20502369 is 96320502.

It is not a de Polignac number, because 20502369 - 2¹ = 20502367 is a prime.

It is a super-2 number, since 2×20502369² = 840694269224322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20502367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4662 + ... + 7920.

It is an arithmetic number, because the mean of its divisors is an integer number (1907100).

Almost surely, 2^20502369 is an apocalyptic number.

It is an amenable number.

20502369 is a deficient number, since it is larger than the sum of its proper divisors (10011231).

20502369 is a wasteful number, since it uses less digits than its factorization.

20502369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20502369 is about 4527.9541737964. The cubic root of 20502369 is about 273.6957257761.

The spelling of 20502369 in words is "twenty million, five hundred two thousand, three hundred sixty-nine".