21950132 has 12 divisors (see below), whose sum is σ = 38445540. Its totient is φ = 10965696.

The previous prime is 21950107. The next prime is 21950141. The reversal of 21950132 is 23105912.

It can be written as a sum of positive squares in 2 ways, for example, as 7540516 + 14409616 = 2746^2 + 3796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21950098 and 21950107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7994 + ... + 10382.

It is an arithmetic number, because the mean of its divisors is an integer number (3203795).

Almost surely, 2^21950132 is an apocalyptic number.

It is an amenable number.

21950132 is a deficient number, since it is larger than the sum of its proper divisors (16495408).

21950132 is a wasteful number, since it uses less digits than its factorization.

21950132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4690 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 21950132 is about 4685.0967972925. The cubic root of 21950132 is about 279.9920575978.

The spelling of 21950132 in words is "twenty-one million, nine hundred fifty thousand, one hundred thirty-two".