326507136 has 128 divisors (see below), whose sum is σ = 901549440. Its totient is φ = 104632320.

The previous prime is 326507131. The next prime is 326507161. The reversal of 326507136 is 631705623.

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

It is a junction number, because it is equal to n+sod(n) for n = 326507097 and 326507106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326507131) 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, 1241341 + ... + 1241603.

It is an arithmetic number, because the mean of its divisors is an integer number (7043355).

Almost surely, 2^326507136 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 326507136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450774720).

326507136 is an abundant number, since it is smaller than the sum of its proper divisors (575042304).

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

326507136 is a wasteful number, since it uses less digits than its factorization.

326507136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 326507136 is about 18069.5084603871. The cubic root of 326507136 is about 688.5955722652.

The spelling of 326507136 in words is "three hundred twenty-six million, five hundred seven thousand, one hundred thirty-six".