21334674 has 8 divisors (see below), whose sum is σ = 42669360. Its totient is φ = 7111556.

The previous prime is 21334669. The next prime is 21334717. The reversal of 21334674 is 47643312.

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

21334674 is an admirable number.

It is a super-3 number, since 3×21334674³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1777884 + ... + 1777895.

It is an arithmetic number, because the mean of its divisors is an integer number (5333670).

Almost surely, 2^21334674 is an apocalyptic number.

21334674 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.

21334674 is a wasteful number, since it uses less digits than its factorization.

21334674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555784.

The product of its digits is 12096, while the sum is 30.

The square root of 21334674 is about 4618.9472826608. The cubic root of 21334674 is about 277.3503194082.

Adding to 21334674 its reverse (47643312), we get a palindrome (68977986).

The spelling of 21334674 in words is "twenty-one million, three hundred thirty-four thousand, six hundred seventy-four".