20969470 has 8 divisors (see below), whose sum is σ = 37745064. Its totient is φ = 8387784.

The previous prime is 20969453. The next prime is 20969471. The reversal of 20969470 is 7496902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20969471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048464 + ... + 1048483.

It is an arithmetic number, because the mean of its divisors is an integer number (4718133).

Almost surely, 2^20969470 is an apocalyptic number.

20969470 is a deficient number, since it is larger than the sum of its proper divisors (16775594).

20969470 is a wasteful number, since it uses less digits than its factorization.

20969470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096954.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 20969470 is about 4579.2433872857. The cubic root of 20969470 is about 275.7586544537.

It can be divided in two parts, 209694 and 70, that added together give a square (209764 = 458²).

The spelling of 20969470 in words is "twenty million, nine hundred sixty-nine thousand, four hundred seventy".