20302415420 has 48 divisors (see below), whose sum is σ = 51290319360. Its totient is φ = 6594467904.

The previous prime is 20302415417. The next prime is 20302415429. The reversal of 20302415420 is 2451420302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302415429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3813584 + ... + 3818903.

It is an arithmetic number, because the mean of its divisors is an integer number (1068548320).

Almost surely, 2^20302415420 is an apocalyptic number.

20302415420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302415420 is an abundant number, since it is smaller than the sum of its proper divisors (30987903940).

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

20302415420 is a wasteful number, since it uses less digits than its factorization.

20302415420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632522 (or 7632520 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20302415420 its reverse (2451420302), we get a palindrome (22753835722).

The spelling of 20302415420 in words is "twenty billion, three hundred two million, four hundred fifteen thousand, four hundred twenty".