21314582 has 8 divisors (see below), whose sum is σ = 31997352. Its totient is φ = 10648800.

The previous prime is 21314569. The next prime is 21314603. The reversal of 21314582 is 28541312.

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

It is a super-2 number, since 2×21314582² = 908622811669448, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 419 + ... + 6542.

It is an arithmetic number, because the mean of its divisors is an integer number (3999669).

Almost surely, 2^21314582 is an apocalyptic number.

21314582 is a deficient number, since it is larger than the sum of its proper divisors (10682770).

21314582 is a wasteful number, since it uses less digits than its factorization.

21314582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8494.

The product of its digits is 1920, while the sum is 26.

The square root of 21314582 is about 4616.7718158904. The cubic root of 21314582 is about 277.2632268682.

Adding to 21314582 its reverse (28541312), we get a palindrome (49855894).

The spelling of 21314582 in words is "twenty-one million, three hundred fourteen thousand, five hundred eighty-two".