20130422240 has 24 divisors (see below), whose sum is σ = 47558122920. Its totient is φ = 8052168832.

The previous prime is 20130422231. The next prime is 20130422261. The reversal of 20130422240 is 4222403102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62907410 + ... + 62907729.

It is an arithmetic number, because the mean of its divisors is an integer number (1981588455).

Almost surely, 2^20130422240 is an apocalyptic number.

20130422240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130422240 is an abundant number, since it is smaller than the sum of its proper divisors (27427700680).

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

20130422240 is a wasteful number, since it uses less digits than its factorization.

20130422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125815154 (or 125815146 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20130422240 its reverse (4222403102), we get a palindrome (24352825342).

The spelling of 20130422240 in words is "twenty billion, one hundred thirty million, four hundred twenty-two thousand, two hundred forty".