326391201 has 40 divisors (see below), whose sum is σ = 516839400. Its totient is φ = 204906240.

The previous prime is 326391187. The next prime is 326391209. The reversal of 326391201 is 102193623.

326391201 is a `hidden beast` number, since 3 + 2 + 639 + 1 + 20 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 56610576 + 269780625 = 7524^2 + 16425^2 .

It is not a de Polignac number, because 326391201 - 2¹⁰ = 326390177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (326391209) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94615 + ... + 98003.

It is an arithmetic number, because the mean of its divisors is an integer number (12920985).

Almost surely, 2^326391201 is an apocalyptic number.

It is an amenable number.

326391201 is a deficient number, since it is larger than the sum of its proper divisors (190448199).

326391201 is a wasteful number, since it uses less digits than its factorization.

326391201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 326391201 is about 18066.3001469587. The cubic root of 326391201 is about 688.5140612561.

The spelling of 326391201 in words is "three hundred twenty-six million, three hundred ninety-one thousand, two hundred one".