23240400444 has 54 divisors (see below), whose sum is σ = 61003020624. Its totient is φ = 7746791400.

The previous prime is 23240400427. The next prime is 23240400457. The reversal of 23240400444 is 44400404232.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (54).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 416532 + ... + 469019.

Almost surely, 2^23240400444 is an apocalyptic number.

It is an amenable number.

23240400444 is an abundant number, since it is smaller than the sum of its proper divisors (37762620180).

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

23240400444 is an frugal number, since it uses more digits than its factorization.

23240400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885579 (or 885556 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 23240400444 its reverse (44400404232), we get a palindrome (67640804676).

The spelling of 23240400444 in words is "twenty-three billion, two hundred forty million, four hundred thousand, four hundred forty-four".