21336350 has 24 divisors (see below), whose sum is σ = 45355728. Its totient is φ = 7315200.

The previous prime is 21336349. The next prime is 21336389. The reversal of 21336350 is 5363312.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 30131 + ... + 30830.

It is an arithmetic number, because the mean of its divisors is an integer number (1889822).

Almost surely, 2^21336350 is an apocalyptic number.

21336350 is an abundant number, since it is smaller than the sum of its proper divisors (24019378).

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

21336350 is a wasteful number, since it uses less digits than its factorization.

21336350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60980 (or 60975 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 21336350 is about 4619.1287057193. The cubic root of 21336350 is about 277.3575818731.

Adding to 21336350 its reverse (5363312), we get a palindrome (26699662).

It can be divided in two parts, 213 and 36350, that added together give a palindrome (36563).

The spelling of 21336350 in words is "twenty-one million, three hundred thirty-six thousand, three hundred fifty".