23454344240 has 40 divisors (see below), whose sum is σ = 55060800288. Its totient is φ = 9290649600.

The previous prime is 23454344203. The next prime is 23454344261. The reversal of 23454344240 is 4244345432.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23454344240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414961 + ... + 1431440.

Almost surely, 2^23454344240 is an apocalyptic number.

23454344240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23454344240 is an abundant number, since it is smaller than the sum of its proper divisors (31606456048).

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

23454344240 is a wasteful number, since it uses less digits than its factorization.

23454344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846517 (or 2846511 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 23454344240 its reverse (4244345432), we get a palindrome (27698689672).

The spelling of 23454344240 in words is "twenty-three billion, four hundred fifty-four million, three hundred forty-four thousand, two hundred forty".