326620628 has 6 divisors (see below), whose sum is σ = 571586106. Its totient is φ = 163310312.

The previous prime is 326620627. The next prime is 326620667. The reversal of 326620628 is 826026623.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 287031364 + 39589264 = 16942^2 + 6292^2 .

It is a super-2 number, since 2×326620628² = 213362069270228768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326620627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40827575 + ... + 40827582.

It is an arithmetic number, because the mean of its divisors is an integer number (95264351).

Almost surely, 2^326620628 is an apocalyptic number.

It is an amenable number.

326620628 is a deficient number, since it is larger than the sum of its proper divisors (244965478).

326620628 is a wasteful number, since it uses less digits than its factorization.

326620628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81655161 (or 81655159 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 326620628 is about 18072.6486160717. The cubic root of 326620628 is about 688.6753469745.

The spelling of 326620628 in words is "three hundred twenty-six million, six hundred twenty thousand, six hundred twenty-eight".