323990820 has 48 divisors (see below), whose sum is σ = 1007973120. Its totient is φ = 86397408.

The previous prime is 323990819. The next prime is 323990839. The reversal of 323990820 is 28099323.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 299452 + ... + 300531.

It is an arithmetic number, because the mean of its divisors is an integer number (20999440).

Almost surely, 2^323990820 is an apocalyptic number.

323990820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323990820 is an abundant number, since it is smaller than the sum of its proper divisors (683982300).

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

323990820 is a wasteful number, since it uses less digits than its factorization.

323990820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600001 (or 599993 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 323990820 is about 17999.7449981937. The cubic root of 323990820 is about 686.8220587567.

The spelling of 323990820 in words is "three hundred twenty-three million, nine hundred ninety thousand, eight hundred twenty".