23424365440 has 128 divisors (see below), whose sum is σ = 64900984320. Its totient is φ = 7917987840.

The previous prime is 23424365429. The next prime is 23424365477. The reversal of 23424365440 is 4456342432.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 23424365440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281259 + ... + 354901.

It is an arithmetic number, because the mean of its divisors is an integer number (507038940).

Almost surely, 2^23424365440 is an apocalyptic number.

23424365440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23424365440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32450492160).

23424365440 is an abundant number, since it is smaller than the sum of its proper divisors (41476618880).

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

23424365440 is an equidigital number, since it uses as much as digits as its factorization.

23424365440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73740 (or 73728 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

The spelling of 23424365440 in words is "twenty-three billion, four hundred twenty-four million, three hundred sixty-five thousand, four hundred forty".