21960682 has 4 divisors (see below), whose sum is σ = 32941026. Its totient is φ = 10980340.

The previous prime is 21960677. The next prime is 21960683. The reversal of 21960682 is 28606912.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 14447601 + 7513081 = 3801^2 + 2741^2 .

It is not an unprimeable number, because it can be changed into a prime (21960683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5490169 + ... + 5490172.

Almost surely, 2^21960682 is an apocalyptic number.

21960682 is a deficient number, since it is larger than the sum of its proper divisors (10980344).

21960682 is a wasteful number, since it uses less digits than its factorization.

21960682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980343.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 21960682 is about 4686.2225726058. Note that the first 3 decimals coincide. The cubic root of 21960682 is about 280.0369084000.

The spelling of 21960682 in words is "twenty-one million, nine hundred sixty thousand, six hundred eighty-two".