326442090 has 144 divisors (see below), whose sum is σ = 889696224. Its totient is φ = 76602240.

The previous prime is 326442089. The next prime is 326442101. The reversal of 326442090 is 90244623.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4872237 + ... + 4872303.

It is an arithmetic number, because the mean of its divisors is an integer number (6178446).

Almost surely, 2^326442090 is an apocalyptic number.

326442090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 326442090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444848112).

326442090 is an abundant number, since it is smaller than the sum of its proper divisors (563254134).

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

326442090 is a wasteful number, since it uses less digits than its factorization.

326442090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 326442090 is about 18067.7084877967. The cubic root of 326442090 is about 688.5498424201.

It can be divided in two parts, 3264 and 42090, that added together give a palindrome (45354).

The spelling of 326442090 in words is "three hundred twenty-six million, four hundred forty-two thousand, ninety".