20779294 has 4 divisors (see below), whose sum is σ = 31168944. Its totient is φ = 10389646.

The previous prime is 20779289. The next prime is 20779301. The reversal of 20779294 is 49297702.

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

It is a Smith number, since the sum of its digits (40) 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, 5194822 + ... + 5194825.

It is an arithmetic number, because the mean of its divisors is an integer number (7792236).

Almost surely, 2^20779294 is an apocalyptic number.

20779294 is a deficient number, since it is larger than the sum of its proper divisors (10389650).

20779294 is a wasteful number, since it uses less digits than its factorization.

20779294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10389649.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 20779294 is about 4558.4310897501. The cubic root of 20779294 is about 274.9224861423.

The spelling of 20779294 in words is "twenty million, seven hundred seventy-nine thousand, two hundred ninety-four".