20502396 has 84 divisors (see below), whose sum is σ = 55087200. Its totient is φ = 6671808.

The previous prime is 20502389. The next prime is 20502401. The reversal of 20502396 is 69320502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 230320 + ... + 230408.

It is an arithmetic number, because the mean of its divisors is an integer number (655800).

Almost surely, 2^20502396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20502396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27543600).

20502396 is an abundant number, since it is smaller than the sum of its proper divisors (34584804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20502396 is an equidigital number, since it uses as much as digits as its factorization.

20502396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 173 counting only the distinct ones).

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

The square root of 20502396 is about 4527.9571552743. The cubic root of 20502396 is about 273.6958459213.

Adding to 20502396 its reverse (69320502), we get a palindrome (89822898).

The spelling of 20502396 in words is "twenty million, five hundred two thousand, three hundred ninety-six".