326724421 has 8 divisors (see below), whose sum is σ = 334621784. Its totient is φ = 318919680.

The previous prime is 326724413. The next prime is 326724439. The reversal of 326724421 is 124427623.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6708100 + 320016321 = 2590^2 + 17889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 326724421 - 2³ = 326724413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326724451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15990 + ... + 30151.

It is an arithmetic number, because the mean of its divisors is an integer number (41827723).

Almost surely, 2^326724421 is an apocalyptic number.

It is an amenable number.

326724421 is a deficient number, since it is larger than the sum of its proper divisors (7897363).

326724421 is an equidigital number, since it uses as much as digits as its factorization.

326724421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46311.

The product of its digits is 16128, while the sum is 31.

The square root of 326724421 is about 18075.5199371968. The cubic root of 326724421 is about 688.7482879790.

The spelling of 326724421 in words is "three hundred twenty-six million, seven hundred twenty-four thousand, four hundred twenty-one".