20430100240 has 40 divisors (see below), whose sum is σ = 51818165568. Its totient is φ = 7429127040.

The previous prime is 20430100219. The next prime is 20430100247. The reversal of 20430100240 is 4200103402.

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 (16).

It is not an unprimeable number, because it can be changed into a prime (20430100247) 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, 11607132 + ... + 11608891.

Almost surely, 2^20430100240 is an apocalyptic number.

20430100240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430100240 is an abundant number, since it is smaller than the sum of its proper divisors (31388065328).

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

20430100240 is a wasteful number, since it uses less digits than its factorization.

20430100240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23216047 (or 23216041 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20430100240 its reverse (4200103402), we get a palindrome (24630203642).

The spelling of 20430100240 in words is "twenty billion, four hundred thirty million, one hundred thousand, two hundred forty".