326398890 has 32 divisors (see below), whose sum is σ = 789534720. Its totient is φ = 86353344.

The previous prime is 326398883. The next prime is 326398903. The reversal of 326398890 is 98893623.

326398890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39025 + ... + 46644.

It is an arithmetic number, because the mean of its divisors is an integer number (24672960).

Almost surely, 2^326398890 is an apocalyptic number.

326398890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

326398890 is an abundant number, since it is smaller than the sum of its proper divisors (463135830).

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

326398890 is a wasteful number, since it uses less digits than its factorization.

326398890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85806.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 326398890 is about 18066.5129452255. The cubic root of 326398890 is about 688.5194677979.

The spelling of 326398890 in words is "three hundred twenty-six million, three hundred ninety-eight thousand, eight hundred ninety".