21514134 has 8 divisors (see below), whose sum is σ = 43028280. Its totient is φ = 7171376.

The previous prime is 21514123. The next prime is 21514153. The reversal of 21514134 is 43141512.

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

21514134 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21514134.

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, 1792839 + ... + 1792850.

It is an arithmetic number, because the mean of its divisors is an integer number (5378535).

Almost surely, 2^21514134 is an apocalyptic number.

21514134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21514134 is a wasteful number, since it uses less digits than its factorization.

21514134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585694.

The product of its digits is 480, while the sum is 21.

The square root of 21514134 is about 4638.3331057612. Note that the first 3 decimals coincide. The cubic root of 21514134 is about 278.1258078334.

Adding to 21514134 its reverse (43141512), we get a palindrome (64655646).

The spelling of 21514134 in words is "twenty-one million, five hundred fourteen thousand, one hundred thirty-four".