21352334 has 8 divisors (see below), whose sum is σ = 32073840. Its totient is φ = 10661056.

The previous prime is 21352291. The next prime is 21352343. The reversal of 21352334 is 43325312.

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

It is a congruent number.

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, 5699 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (4009230).

Almost surely, 2^21352334 is an apocalyptic number.

21352334 is a deficient number, since it is larger than the sum of its proper divisors (10721506).

21352334 is a wasteful number, since it uses less digits than its factorization.

21352334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15114.

The product of its digits is 2160, while the sum is 23.

The square root of 21352334 is about 4620.8585782298. The cubic root of 21352334 is about 277.4268248473.

Adding to 21352334 its reverse (43325312), we get a palindrome (64677646).

The spelling of 21352334 in words is "twenty-one million, three hundred fifty-two thousand, three hundred thirty-four".