21162950 has 12 divisors (see below), whose sum is σ = 39363180. Its totient is φ = 8465160.

The previous prime is 21162949. The next prime is 21162959. The reversal of 21162950 is 5926112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21162959) 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 5 ways as a sum of consecutive naturals, for example, 211580 + ... + 211679.

It is an arithmetic number, because the mean of its divisors is an integer number (3280265).

Almost surely, 2^21162950 is an apocalyptic number.

21162950 is a deficient number, since it is larger than the sum of its proper divisors (18200230).

21162950 is a wasteful number, since it uses less digits than its factorization.

21162950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423271 (or 423266 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 21162950 is about 4600.3206409988. The cubic root of 21162950 is about 276.6041777550.

The spelling of 21162950 in words is "twenty-one million, one hundred sixty-two thousand, nine hundred fifty".