21614002 has 4 divisors (see below), whose sum is σ = 32421006. Its totient is φ = 10807000.

The previous prime is 21613981. The next prime is 21614017. The reversal of 21614002 is 20041612.

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., 19900521 + 1713481 = 4461^2 + 1309^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5403499 + ... + 5403502.

Almost surely, 2^21614002 is an apocalyptic number.

21614002 is a deficient number, since it is larger than the sum of its proper divisors (10807004).

21614002 is a wasteful number, since it uses less digits than its factorization.

21614002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10807003.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21614002 is about 4649.0861467605. The cubic root of 21614002 is about 278.5554943580. Note that the first 3 decimals are identical.

Adding to 21614002 its reverse (20041612), we get a palindrome (41655614).

The spelling of 21614002 in words is "twenty-one million, six hundred fourteen thousand, two".