21344950 has 36 divisors (see below), whose sum is σ = 43531812. Its totient is φ = 7722400.

The previous prime is 21344933. The next prime is 21344951. The reversal of 21344950 is 5944312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344951) 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 17 ways as a sum of consecutive naturals, for example, 108252 + ... + 108448.

It is an arithmetic number, because the mean of its divisors is an integer number (1209217).

Almost surely, 2^21344950 is an apocalyptic number.

21344950 is an abundant number, since it is smaller than the sum of its proper divisors (22186862).

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

21344950 is a wasteful number, since it uses less digits than its factorization.

21344950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 21344950 is about 4620.0595234261. The cubic root of 21344950 is about 277.3948415231.

The spelling of 21344950 in words is "twenty-one million, three hundred forty-four thousand, nine hundred fifty".