326820630 has 64 divisors (see below), whose sum is σ = 815984640. Its totient is φ = 83700864.

The previous prime is 326820619. The next prime is 326820649. The reversal of 326820630 is 36028623.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85827 + ... + 89553.

It is an arithmetic number, because the mean of its divisors is an integer number (12749760).

Almost surely, 2^326820630 is an apocalyptic number.

326820630 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 326820630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407992320).

326820630 is an abundant number, since it is smaller than the sum of its proper divisors (489164010).

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

326820630 is a wasteful number, since it uses less digits than its factorization.

326820630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853.

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

The square root of 326820630 is about 18078.1810478820. The cubic root of 326820630 is about 688.8158854982.

The spelling of 326820630 in words is "three hundred twenty-six million, eight hundred twenty thousand, six hundred thirty".