21162314 has 48 divisors (see below), whose sum is σ = 37134720. Its totient is φ = 9008640.

The previous prime is 21162307. The next prime is 21162329. The reversal of 21162314 is 41326112.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 450239 + ... + 450285.

It is an arithmetic number, because the mean of its divisors is an integer number (773640).

Almost surely, 2^21162314 is an apocalyptic number.

21162314 is a deficient number, since it is larger than the sum of its proper divisors (15972406).

21162314 is a wasteful number, since it uses less digits than its factorization.

21162314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 126 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 21162314 is about 4600.2515148631. The cubic root of 21162314 is about 276.6014068429.

Adding to 21162314 its reverse (41326112), we get a palindrome (62488426).

The spelling of 21162314 in words is "twenty-one million, one hundred sixty-two thousand, three hundred fourteen".