20746426 has 32 divisors (see below), whose sum is σ = 34817040. Its totient is φ = 9225216.

The previous prime is 20746421. The next prime is 20746441. The reversal of 20746426 is 62464702.

It can be written as a sum of positive squares in 8 ways, for example, as 17230801 + 3515625 = 4151^2 + 1875^2 .

It is not an unprimeable number, because it can be changed into a prime (20746421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52060 + ... + 52456.

Almost surely, 2^20746426 is an apocalyptic number.

20746426 is a deficient number, since it is larger than the sum of its proper divisors (14070614).

20746426 is a wasteful number, since it uses less digits than its factorization.

20746426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 20746426 is about 4554.8244752131. The cubic root of 20746426 is about 274.7774552151. Note that the first 3 decimals are identical.

The spelling of 20746426 in words is "twenty million, seven hundred forty-six thousand, four hundred twenty-six".