21233254 has 8 divisors (see below), whose sum is σ = 36399888. Its totient is φ = 9099960.

The previous prime is 21233243. The next prime is 21233263. The reversal of 21233254 is 45233212.

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, 758317 + ... + 758344.

It is an arithmetic number, because the mean of its divisors is an integer number (4549986).

Almost surely, 2^21233254 is an apocalyptic number.

21233254 is a deficient number, since it is larger than the sum of its proper divisors (15166634).

21233254 is a wasteful number, since it uses less digits than its factorization.

21233254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516670.

The product of its digits is 1440, while the sum is 22.

The square root of 21233254 is about 4607.9555119380. The cubic root of 21233254 is about 276.9101351937.

Adding to 21233254 its reverse (45233212), we get a palindrome (66466466).

The spelling of 21233254 in words is "twenty-one million, two hundred thirty-three thousand, two hundred fifty-four".