20925826 has 8 divisors (see below), whose sum is σ = 32154444. Its totient is φ = 10207680.

The previous prime is 20925823. The next prime is 20925829. The reversal of 20925826 is 62852902.

It is an interprime number because it is at equal distance from previous prime (20925823) and next prime (20925829).

It can be written as a sum of positive squares in 2 ways, for example, as 20205025 + 720801 = 4495^2 + 849^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20925791 and 20925800.

It is not an unprimeable number, because it can be changed into a prime (20925823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127515 + ... + 127678.

Almost surely, 2^20925826 is an apocalyptic number.

20925826 is a deficient number, since it is larger than the sum of its proper divisors (11228618).

20925826 is a wasteful number, since it uses less digits than its factorization.

20925826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255236.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20925826 is about 4574.4754890588. The cubic root of 20925826 is about 275.5672083488.

The spelling of 20925826 in words is "twenty million, nine hundred twenty-five thousand, eight hundred twenty-six".