20123626 has 4 divisors (see below), whose sum is σ = 30185442. Its totient is φ = 10061812.

The previous prime is 20123617. The next prime is 20123627. The reversal of 20123626 is 62632102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13697401 + 6426225 = 3701^2 + 2535^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20123597 and 20123606.

It is not an unprimeable number, because it can be changed into a prime (20123627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030905 + ... + 5030908.

Almost surely, 2^20123626 is an apocalyptic number.

20123626 is a deficient number, since it is larger than the sum of its proper divisors (10061816).

20123626 is a wasteful number, since it uses less digits than its factorization.

20123626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061815.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20123626 is about 4485.9364685648. The cubic root of 20123626 is about 271.9999008794. Note that the first 4 decimals are identical.

Adding to 20123626 its sum of digits (22), we get a cube (20123648 = 272³).

Adding to 20123626 its reverse (62632102), we get a palindrome (82755728).

The spelling of 20123626 in words is "twenty million, one hundred twenty-three thousand, six hundred twenty-six".