21950803 has 8 divisors (see below), whose sum is σ = 25118208. Its totient is φ = 18791304.

The previous prime is 21950801. The next prime is 21950827. The reversal of 21950803 is 30805912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21950803 - 2¹ = 21950801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21950801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6300 + ... + 9142.

It is an arithmetic number, because the mean of its divisors is an integer number (3139776).

Almost surely, 2^21950803 is an apocalyptic number.

21950803 is a deficient number, since it is larger than the sum of its proper divisors (3167405).

21950803 is a wasteful number, since it uses less digits than its factorization.

21950803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 21950803 is about 4685.1684067918. The cubic root of 21950803 is about 279.9949106218.

The spelling of 21950803 in words is "twenty-one million, nine hundred fifty thousand, eight hundred three".