21241950 has 24 divisors (see below), whose sum is σ = 52680408. Its totient is φ = 5664480.

The previous prime is 21241939. The next prime is 21241951. The reversal of 21241950 is 5914212.

It is a self number, because there is not a number n which added to its sum of digits gives 21241950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70657 + ... + 70956.

It is an arithmetic number, because the mean of its divisors is an integer number (2195017).

Almost surely, 2^21241950 is an apocalyptic number.

21241950 is an abundant number, since it is smaller than the sum of its proper divisors (31438458).

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

21241950 is a wasteful number, since it uses less digits than its factorization.

21241950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141628 (or 141623 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 21241950 is about 4608.8990008461. The cubic root of 21241950 is about 276.9479325387.

The spelling of 21241950 in words is "twenty-one million, two hundred forty-one thousand, nine hundred fifty".