326135440 has 40 divisors (see below), whose sum is σ = 761647680. Its totient is φ = 129872256.

The previous prime is 326135413. The next prime is 326135441. The reversal of 326135440 is 44531623.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 326135399 and 326135408.

It is not an unprimeable number, because it can be changed into a prime (326135441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9181 + ... + 27139.

It is an arithmetic number, because the mean of its divisors is an integer number (19041192).

Almost surely, 2^326135440 is an apocalyptic number.

It is an amenable number.

326135440 is an abundant number, since it is smaller than the sum of its proper divisors (435512240).

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

326135440 is a wasteful number, since it uses less digits than its factorization.

326135440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18199 (or 18193 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 326135440 is about 18059.2203596944. The cubic root of 326135440 is about 688.3341737872.

The spelling of 326135440 in words is "three hundred twenty-six million, one hundred thirty-five thousand, four hundred forty".