21946102 has 8 divisors (see below), whose sum is σ = 34651800. Its totient is φ = 10395504.

The previous prime is 21946097. The next prime is 21946103. The reversal of 21946102 is 20164912.

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 (21946103) 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, 288727 + ... + 288802.

It is an arithmetic number, because the mean of its divisors is an integer number (4331475).

Almost surely, 2^21946102 is an apocalyptic number.

21946102 is a deficient number, since it is larger than the sum of its proper divisors (12705698).

21946102 is a wasteful number, since it uses less digits than its factorization.

21946102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577550.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 21946102 is about 4684.6666903847. Note that the first 4 decimals coincide. The cubic root of 21946102 is about 279.9749212232.

The spelling of 21946102 in words is "twenty-one million, nine hundred forty-six thousand, one hundred two".