20936954 has 4 divisors (see below), whose sum is σ = 31405434. Its totient is φ = 10468476.

The previous prime is 20936947. The next prime is 20937017. The reversal of 20936954 is 45963902.

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., 12439729 + 8497225 = 3527^2 + 2915^2 .

It is an unprimeable number.

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, 5234237 + ... + 5234240.

Almost surely, 2^20936954 is an apocalyptic number.

20936954 is a deficient number, since it is larger than the sum of its proper divisors (10468480).

20936954 is a wasteful number, since it uses less digits than its factorization.

20936954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468479.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20936954 is about 4575.6916417084. The cubic root of 20936954 is about 275.6160470180.

The spelling of 20936954 in words is "twenty million, nine hundred thirty-six thousand, nine hundred fifty-four".