23252343440 has 40 divisors (see below), whose sum is σ = 54363752640. Its totient is φ = 9248971136.

The previous prime is 23252343427. The next prime is 23252343449. The reversal of 23252343440 is 4434325232.

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

It is a super-2 number, since 2×23252343440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23252343397 and 23252343406.

It is not an unprimeable number, because it can be changed into a prime (23252343449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797564 + ... + 826203.

It is an arithmetic number, because the mean of its divisors is an integer number (1359093816).

Almost surely, 2^23252343440 is an apocalyptic number.

23252343440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23252343440 is an abundant number, since it is smaller than the sum of its proper divisors (31111409200).

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

23252343440 is a wasteful number, since it uses less digits than its factorization.

23252343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623959 (or 1623953 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 23252343440 its reverse (4434325232), we get a palindrome (27686668672).

The spelling of 23252343440 in words is "twenty-three billion, two hundred fifty-two million, three hundred forty-three thousand, four hundred forty".