21479662 has 16 divisors (see below), whose sum is σ = 33516000. Its totient is φ = 10311840.

The previous prime is 21479659. The next prime is 21479663. The reversal of 21479662 is 26697412.

It is a super-2 number, since 2×21479662² = 922751759268488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21479663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10612 + ... + 12472.

It is an arithmetic number, because the mean of its divisors is an integer number (2094750).

Almost surely, 2^21479662 is an apocalyptic number.

21479662 is a deficient number, since it is larger than the sum of its proper divisors (12036338).

21479662 is a wasteful number, since it uses less digits than its factorization.

21479662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091.

The product of its digits is 36288, while the sum is 37.

The square root of 21479662 is about 4634.6156259176. The cubic root of 21479662 is about 277.9771818478.

The spelling of 21479662 in words is "twenty-one million, four hundred seventy-nine thousand, six hundred sixty-two".