20426415284 has 24 divisors (see below), whose sum is σ = 39530080128. Its totient is φ = 9157544640.

The previous prime is 20426415257. The next prime is 20426415319. The reversal of 20426415284 is 48251462402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3176492 + ... + 3182915.

It is an arithmetic number, because the mean of its divisors is an integer number (1647086672).

Almost surely, 2^20426415284 is an apocalyptic number.

It is an amenable number.

20426415284 is a deficient number, since it is larger than the sum of its proper divisors (19103664844).

20426415284 is a wasteful number, since it uses less digits than its factorization.

20426415284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359495 (or 6359493 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

Adding to 20426415284 its reverse (48251462402), we get a palindrome (68677877686).

The spelling of 20426415284 in words is "twenty billion, four hundred twenty-six million, four hundred fifteen thousand, two hundred eighty-four".