10323236440 has 64 divisors (see below), whose sum is σ = 25466400000. Its totient is φ = 3735008640.

The previous prime is 10323236423. The next prime is 10323236447. The reversal of 10323236440 is 4463232301.

It is a super-2 number, since 2×10323236440² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10323236399 and 10323236408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10323236447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28611 + ... + 146509.

It is an arithmetic number, because the mean of its divisors is an integer number (397912500).

Almost surely, 2^10323236440 is an apocalyptic number.

10323236440 is a gapful number since it is divisible by the number (10) 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 10323236440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12733200000).

10323236440 is an abundant number, since it is smaller than the sum of its proper divisors (15143163560).

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

10323236440 is a wasteful number, since it uses less digits than its factorization.

10323236440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118120 (or 118116 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 10323236440 its reverse (4463232301), we get a palindrome (14786468741).

The spelling of 10323236440 in words is "ten billion, three hundred twenty-three million, two hundred thirty-six thousand, four hundred forty".