20495366 has 4 divisors (see below), whose sum is σ = 30743052. Its totient is φ = 10247682.

The previous prime is 20495359. The next prime is 20495383. The reversal of 20495366 is 66359402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 5123840 + ... + 5123843.

It is an arithmetic number, because the mean of its divisors is an integer number (7685763).

Almost surely, 2^20495366 is an apocalyptic number.

20495366 is a deficient number, since it is larger than the sum of its proper divisors (10247686).

20495366 is a wasteful number, since it uses less digits than its factorization.

20495366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247685.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 20495366 is about 4527.1808004541. The cubic root of 20495366 is about 273.6645601185.

The spelling of 20495366 in words is "twenty million, four hundred ninety-five thousand, three hundred sixty-six".