20969204 has 24 divisors (see below), whose sum is σ = 38896200. Its totient is φ = 9873920.

The previous prime is 20969197. The next prime is 20969209. The reversal of 20969204 is 40296902.

It can be written as a sum of positive squares in 4 ways, for example, as 357604 + 20611600 = 598^2 + 4540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20969209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 6960.

It is an arithmetic number, because the mean of its divisors is an integer number (1620675).

Almost surely, 2^20969204 is an apocalyptic number.

It is an amenable number.

20969204 is a deficient number, since it is larger than the sum of its proper divisors (17926996).

20969204 is a wasteful number, since it uses less digits than its factorization.

20969204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483 (or 4481 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20969204 is about 4579.2143430942. The cubic root of 20969204 is about 275.7574884392.

The spelling of 20969204 in words is "twenty million, nine hundred sixty-nine thousand, two hundred four".