21461108 has 12 divisors (see below), whose sum is σ = 39533760. Its totient is φ = 10165752.

The previous prime is 21461107. The next prime is 21461113. The reversal of 21461108 is 80116412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21461107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141116 + ... + 141267.

It is an arithmetic number, because the mean of its divisors is an integer number (3294480).

Almost surely, 2^21461108 is an apocalyptic number.

It is an amenable number.

21461108 is a deficient number, since it is larger than the sum of its proper divisors (18072652).

21461108 is a wasteful number, since it uses less digits than its factorization.

21461108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282406 (or 282404 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 21461108 is about 4632.6135172276. The cubic root of 21461108 is about 277.8971204642.

The spelling of 21461108 in words is "twenty-one million, four hundred sixty-one thousand, one hundred eight".