7323131928 has 96 divisors (see below), whose sum is σ = 21366408960. Its totient is φ = 2085491520.

The previous prime is 7323131887. The next prime is 7323131929. The reversal of 7323131928 is 8291313237.

It is a super-2 number, since 2×7323131928² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7323131929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 355725 + ... + 375747.

It is an arithmetic number, because the mean of its divisors is an integer number (222566760).

Almost surely, 2^7323131928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7323131928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10683204480).

7323131928 is an abundant number, since it is smaller than the sum of its proper divisors (14043277032).

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

7323131928 is a wasteful number, since it uses less digits than its factorization.

7323131928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20357 (or 20346 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 7323131928 is about 85575.2997540762. The cubic root of 7323131928 is about 1941.9242543347.

The spelling of 7323131928 in words is "seven billion, three hundred twenty-three million, one hundred thirty-one thousand, nine hundred twenty-eight".