23781903240 has 32 divisors (see below), whose sum is σ = 71345710080. Its totient is φ = 6341840832.

The previous prime is 23781903221. The next prime is 23781903247. The reversal of 23781903240 is 4230918732.

It is not an unprimeable number, because it can be changed into a prime (23781903247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99091144 + ... + 99091383.

It is an arithmetic number, because the mean of its divisors is an integer number (2229553440).

Almost surely, 2^23781903240 is an apocalyptic number.

23781903240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23781903240 is an abundant number, since it is smaller than the sum of its proper divisors (47563806840).

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

23781903240 is a wasteful number, since it uses less digits than its factorization.

23781903240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198182541 (or 198182537 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 23781903240 in words is "twenty-three billion, seven hundred eighty-one million, nine hundred three thousand, two hundred forty".