21924962 has 4 divisors (see below), whose sum is σ = 32887446. Its totient is φ = 10962480.

The previous prime is 21924961. The next prime is 21924971. The reversal of 21924962 is 26942912.

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., 19456921 + 2468041 = 4411^2 + 1571^2 .

It is a super-3 number, since 3×21924962³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21924961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5481239 + ... + 5481242.

Almost surely, 2^21924962 is an apocalyptic number.

21924962 is a deficient number, since it is larger than the sum of its proper divisors (10962484).

21924962 is a wasteful number, since it uses less digits than its factorization.

21924962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10962483.

The product of its digits is 15552, while the sum is 35.

The square root of 21924962 is about 4682.4098496394. The cubic root of 21924962 is about 279.8849952875.

The spelling of 21924962 in words is "twenty-one million, nine hundred twenty-four thousand, nine hundred sixty-two".