15822733940 has 96 divisors (see below), whose sum is σ = 37160466336. Its totient is φ = 5621391360.

The previous prime is 15822733937. The next prime is 15822733943. The reversal of 15822733940 is 4933722851.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15822733937) and next prime (15822733943).

It can be written as a sum of positive squares in 16 ways, for example, as 5128278544 + 10694455396 = 71612^2 + 103414^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15822733891 and 15822733900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15822733943) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 768014 + ... + 788346.

It is an arithmetic number, because the mean of its divisors is an integer number (387088191).

Almost surely, 2^15822733940 is an apocalyptic number.

15822733940 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 15822733940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18580233168).

15822733940 is an abundant number, since it is smaller than the sum of its proper divisors (21337732396).

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

15822733940 is a wasteful number, since it uses less digits than its factorization.

15822733940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20469 (or 20467 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 15822733940 in words is "fifteen billion, eight hundred twenty-two million, seven hundred thirty-three thousand, nine hundred forty".