21960573 has 24 divisors (see below), whose sum is σ = 31075488. Its totient is φ = 13783392.

The previous prime is 21960571. The next prime is 21960577. The reversal of 21960573 is 37506912.

It is not a de Polignac number, because 21960573 - 2¹ = 21960571 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21960571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205186 + ... + 205292.

It is an arithmetic number, because the mean of its divisors is an integer number (1294812).

Almost surely, 2^21960573 is an apocalyptic number.

It is an amenable number.

21960573 is a deficient number, since it is larger than the sum of its proper divisors (9114915).

21960573 is a wasteful number, since it uses less digits than its factorization.

21960573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 21960573 is about 4686.2109427554. The cubic root of 21960573 is about 280.0364450860.

The spelling of 21960573 in words is "twenty-one million, nine hundred sixty thousand, five hundred seventy-three".