21608962 has 16 divisors (see below), whose sum is σ = 34068672. Its totient is φ = 10266480.

The previous prime is 21608959. The next prime is 21608963. The reversal of 21608962 is 26980612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21608963) 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, 214 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (2129292).

Almost surely, 2^21608962 is an apocalyptic number.

21608962 is a deficient number, since it is larger than the sum of its proper divisors (12459710).

21608962 is a wasteful number, since it uses less digits than its factorization.

21608962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873.

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

The square root of 21608962 is about 4648.5440731481. The cubic root of 21608962 is about 278.5338412828.

The spelling of 21608962 in words is "twenty-one million, six hundred eight thousand, nine hundred sixty-two".