20455294 has 4 divisors (see below), whose sum is σ = 30682944. Its totient is φ = 10227646.

The previous prime is 20455289. The next prime is 20455307. The reversal of 20455294 is 49255402.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5113822 + ... + 5113825.

It is an arithmetic number, because the mean of its divisors is an integer number (7670736).

Almost surely, 2^20455294 is an apocalyptic number.

20455294 is a deficient number, since it is larger than the sum of its proper divisors (10227650).

20455294 is a wasteful number, since it uses less digits than its factorization.

20455294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227649.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20455294 is about 4522.7529227231. The cubic root of 20455294 is about 273.4860898402.

The spelling of 20455294 in words is "twenty million, four hundred fifty-five thousand, two hundred ninety-four".