1328626 has 16 divisors (see below), whose sum is σ = 2167704. Its totient is φ = 607104.

The previous prime is 1328617. The next prime is 1328647. The reversal of 1328626 is 6268231.

It can be written as a sum of positive squares in 4 ways, for example, as 998001 + 330625 = 999^2 + 575^2 .

It is a super-4 number, since 4×1328626⁴ (a number of 26 digits) contains 4444 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3³ + 2⁴ + 8² + 6 + 2²⁰ + 6⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 1328594 and 1328603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3376 + ... + 3748.

2^1328626 is an apocalyptic number.

1328626 is a deficient number, since it is larger than the sum of its proper divisors (839078).

1328626 is a wasteful number, since it uses less digits than its factorization.

1328626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its digits is 3456, while the sum is 28.

The square root of 1328626 is about 1152.6604009855. The cubic root of 1328626 is about 109.9345616298.

The spelling of 1328626 in words is "one million, three hundred twenty-eight thousand, six hundred twenty-six".