20130402204420 has 96 divisors (see below), whose sum is σ = 57903456925440. Its totient is φ = 5222341386240.

The previous prime is 20130402204371. The next prime is 20130402204433. The reversal of 20130402204420 is 2440220403102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10722400 + ... + 12459159.

It is an arithmetic number, because the mean of its divisors is an integer number (603161009640).

Almost surely, 2^{20130402204420} is an apocalyptic number.

20130402204420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130402204420 is an abundant number, since it is smaller than the sum of its proper divisors (37773054721020).

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

20130402204420 is a wasteful number, since it uses less digits than its factorization.

20130402204420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23181965 (or 23181963 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20130402204420 its reverse (2440220403102), we get a palindrome (22570622607522).

The spelling of 20130402204420 in words is "twenty trillion, one hundred thirty billion, four hundred two million, two hundred four thousand, four hundred twenty".