20004626 has 8 divisors (see below), whose sum is σ = 30198540. Its totient is φ = 9938448.

The previous prime is 20004583. The next prime is 20004667. The reversal of 20004626 is 62640002.

It can be written as a sum of positive squares in 2 ways, for example, as 17648401 + 2356225 = 4201^2 + 1535^2 .

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

It is a super-2 number, since 2×20004626² = 800370122799752, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20004598 and 20004607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31541 + ... + 32168.

Almost surely, 2^20004626 is an apocalyptic number.

20004626 is a deficient number, since it is larger than the sum of its proper divisors (10193914).

20004626 is a wasteful number, since it uses less digits than its factorization.

20004626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63868.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20004626 is about 4472.6531276190. The cubic root of 20004626 is about 271.4626882060.

Adding to 20004626 its reverse (62640002), we get a palindrome (82644628).

The spelling of 20004626 in words is "twenty million, four thousand, six hundred twenty-six".