21488162 has 8 divisors (see below), whose sum is σ = 32334876. Its totient is φ = 10709872.

The previous prime is 21488143. The next prime is 21488171. The reversal of 21488162 is 26188412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21077281 + 410881 = 4591^2 + 641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21488162² = 923482212276488, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 16313 + ... + 17580.

Almost surely, 2^21488162 is an apocalyptic number.

21488162 is a deficient number, since it is larger than the sum of its proper divisors (10846714).

21488162 is a wasteful number, since it uses less digits than its factorization.

21488162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34212.

The product of its digits is 6144, while the sum is 32.

The square root of 21488162 is about 4635.5325476152. The cubic root of 21488162 is about 278.0138443496.

The spelling of 21488162 in words is "twenty-one million, four hundred eighty-eight thousand, one hundred sixty-two".