20464826 has 4 divisors (see below), whose sum is σ = 30697242. Its totient is φ = 10232412.

The previous prime is 20464823. The next prime is 20464841. The reversal of 20464826 is 62846402.

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., 16851025 + 3613801 = 4105^2 + 1901^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20464792 and 20464801.

It is not an unprimeable number, because it can be changed into a prime (20464823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116205 + ... + 5116208.

Almost surely, 2^20464826 is an apocalyptic number.

20464826 is a deficient number, since it is larger than the sum of its proper divisors (10232416).

20464826 is a wasteful number, since it uses less digits than its factorization.

20464826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10232415.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20464826 is about 4523.8065829564. The cubic root of 20464826 is about 273.5285640050.

The spelling of 20464826 in words is "twenty million, four hundred sixty-four thousand, eight hundred twenty-six".