20741626 has 4 divisors (see below), whose sum is σ = 31112442. Its totient is φ = 10370812.

The previous prime is 20741621. The next prime is 20741713. The reversal of 20741626 is 62614702.

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., 16394401 + 4347225 = 4049^2 + 2085^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20741594 and 20741603.

It is not an unprimeable number, because it can be changed into a prime (20741621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5185405 + ... + 5185408.

Almost surely, 2^20741626 is an apocalyptic number.

20741626 is a deficient number, since it is larger than the sum of its proper divisors (10370816).

20741626 is a wasteful number, since it uses less digits than its factorization.

20741626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10370815.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20741626 is about 4554.2975309042. The cubic root of 20741626 is about 274.7562622714.

The spelling of 20741626 in words is "twenty million, seven hundred forty-one thousand, six hundred twenty-six".