20709962 has 64 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 7547904.

The previous prime is 20709937. The next prime is 20709977. The reversal of 20709962 is 26990702.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183218 + ... + 183330.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^20709962 is an apocalyptic number.

20709962 is a deficient number, since it is larger than the sum of its proper divisors (20658358).

20709962 is a wasteful number, since it uses less digits than its factorization.

20709962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20709962 is about 4550.8199261232. The cubic root of 20709962 is about 274.6163774956.

The spelling of 20709962 in words is "twenty million, seven hundred nine thousand, nine hundred sixty-two".