326623872 has 128 divisors (see below), whose sum is σ = 900472320. Its totient is φ = 104832000.

The previous prime is 326623867. The next prime is 326623877. The reversal of 326623872 is 278326623.

It is an interprime number because it is at equal distance from previous prime (326623867) and next prime (326623877).

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

It is a self number, because there is not a number n which added to its sum of digits gives 326623872.

It is not an unprimeable number, because it can be changed into a prime (326623877) 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, 2162997 + ... + 2163147.

It is an arithmetic number, because the mean of its divisors is an integer number (7034940).

Almost surely, 2^326623872 is an apocalyptic number.

326623872 is a gapful number since it is divisible by the number (32) 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 326623872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450236160).

326623872 is an abundant number, since it is smaller than the sum of its proper divisors (573848448).

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

326623872 is a wasteful number, since it uses less digits than its factorization.

326623872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 330 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 326623872 is about 18072.7383647305. The cubic root of 326623872 is about 688.6776269442.

The spelling of 326623872 in words is "three hundred twenty-six million, six hundred twenty-three thousand, eight hundred seventy-two".