23826797440 has 128 divisors (see below), whose sum is σ = 60408439200. Its totient is φ = 8955691008.

The previous prime is 23826797429. The next prime is 23826797459. The reversal of 23826797440 is 4479762832.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8800567 + ... + 8803273.

Almost surely, 2^23826797440 is an apocalyptic number.

23826797440 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 23826797440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30204219600).

23826797440 is an abundant number, since it is smaller than the sum of its proper divisors (36581641760).

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

23826797440 is a wasteful number, since it uses less digits than its factorization.

23826797440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552 (or 3540 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 23826797440 in words is "twenty-three billion, eight hundred twenty-six million, seven hundred ninety-seven thousand, four hundred forty".