21941246 has 8 divisors (see below), whose sum is σ = 32971224. Its totient is φ = 10950840.

The previous prime is 21941243. The next prime is 21941261. The reversal of 21941246 is 64214912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21941243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8465 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (4121403).

Almost surely, 2^21941246 is an apocalyptic number.

21941246 is a deficient number, since it is larger than the sum of its proper divisors (11029978).

21941246 is a wasteful number, since it uses less digits than its factorization.

21941246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19786.

The product of its digits is 3456, while the sum is 29.

The square root of 21941246 is about 4684.1483751051. The cubic root of 21941246 is about 279.9542697425.

The spelling of 21941246 in words is "twenty-one million, nine hundred forty-one thousand, two hundred forty-six".