20130232040 has 64 divisors (see below), whose sum is σ = 47283989760. Its totient is φ = 7698465280.

The previous prime is 20130232037. The next prime is 20130232051. The reversal of 20130232040 is 4023203102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2932292 + ... + 2939148.

It is an arithmetic number, because the mean of its divisors is an integer number (738812340).

Almost surely, 2^20130232040 is an apocalyptic number.

20130232040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130232040 is an abundant number, since it is smaller than the sum of its proper divisors (27153757720).

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

20130232040 is a wasteful number, since it uses less digits than its factorization.

20130232040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10082 (or 10078 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20130232040 its reverse (4023203102), we get a palindrome (24153435142).

The spelling of 20130232040 in words is "twenty billion, one hundred thirty million, two hundred thirty-two thousand, forty".