21466950 has 24 divisors (see below), whose sum is σ = 53238408. Its totient is φ = 5724480.

The previous prime is 21466909. The next prime is 21466957. The reversal of 21466950 is 5966412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21466957) 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 11 ways as a sum of consecutive naturals, for example, 71407 + ... + 71706.

It is an arithmetic number, because the mean of its divisors is an integer number (2218267).

Almost surely, 2^21466950 is an apocalyptic number.

21466950 is an abundant number, since it is smaller than the sum of its proper divisors (31771458).

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

21466950 is a wasteful number, since it uses less digits than its factorization.

21466950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143128 (or 143123 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 21466950 is about 4633.2440039350. The cubic root of 21466950 is about 277.9223339448.

The spelling of 21466950 in words is "twenty-one million, four hundred sixty-six thousand, nine hundred fifty".