20302774 has 4 divisors (see below), whose sum is σ = 30454164. Its totient is φ = 10151386.

The previous prime is 20302771. The next prime is 20302781. The reversal of 20302774 is 47720302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5075692 + ... + 5075695.

It is an arithmetic number, because the mean of its divisors is an integer number (7613541).

Almost surely, 2^20302774 is an apocalyptic number.

20302774 is a deficient number, since it is larger than the sum of its proper divisors (10151390).

20302774 is a wasteful number, since it uses less digits than its factorization.

20302774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151389.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20302774 is about 4505.8599623157. The cubic root of 20302774 is about 272.8046655578.

The spelling of 20302774 in words is "twenty million, three hundred two thousand, seven hundred seventy-four".