20430241040 has 40 divisors (see below), whose sum is σ = 51818522688. Its totient is φ = 7429178240.

The previous prime is 20430241031. The next prime is 20430241043. The reversal of 20430241040 is 4014203402.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is not an unprimeable number, because it can be changed into a prime (20430241043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11607212 + ... + 11608971.

Almost surely, 2^20430241040 is an apocalyptic number.

20430241040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430241040 is an abundant number, since it is smaller than the sum of its proper divisors (31388281648).

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

20430241040 is a wasteful number, since it uses less digits than its factorization.

20430241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23216207 (or 23216201 counting only the distinct ones).

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

Adding to 20430241040 its reverse (4014203402), we get a palindrome (24444444442).

The spelling of 20430241040 in words is "twenty billion, four hundred thirty million, two hundred forty-one thousand, forty".