20502344 has 16 divisors (see below), whose sum is σ = 39073020. Its totient is φ = 10082880.

The previous prime is 20502341. The next prime is 20502347. The reversal of 20502344 is 44320502.

It is an interprime number because it is at equal distance from previous prime (20502341) and next prime (20502347).

It can be written as a sum of positive squares in 2 ways, for example, as 19909444 + 592900 = 4462^2 + 770^2 .

It is a super-2 number, since 2×20502344² = 840692218988672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20502341) 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, 20519 + ... + 21494.

Almost surely, 2^20502344 is an apocalyptic number.

It is an amenable number.

20502344 is a deficient number, since it is larger than the sum of its proper divisors (18570676).

20502344 is a wasteful number, since it uses less digits than its factorization.

20502344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42080 (or 42076 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20502344 is about 4527.9514131669. The cubic root of 20502344 is about 273.6956145305.

Adding to 20502344 its reverse (44320502), we get a palindrome (64822846).

The spelling of 20502344 in words is "twenty million, five hundred two thousand, three hundred forty-four".