21962706 has 16 divisors (see below), whose sum is σ = 44099424. Its totient is φ = 7291904.

The previous prime is 21962701. The next prime is 21962729. The reversal of 21962706 is 60726912.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21962701) 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, 5580 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (2756214).

Almost surely, 2^21962706 is an apocalyptic number.

21962706 is an abundant number, since it is smaller than the sum of its proper divisors (22136718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21962706 is a wasteful number, since it uses less digits than its factorization.

21962706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14505.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 21962706 is about 4686.4385198144. The cubic root of 21962706 is about 280.0455113097.

The spelling of 21962706 in words is "twenty-one million, nine hundred sixty-two thousand, seven hundred six".