20958673 has 8 divisors (see below), whose sum is σ = 21508256. Its totient is φ = 20412000.

The previous prime is 20958631. The next prime is 20958689. The reversal of 20958673 is 37685902.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20958673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20958073) 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, 25438 + ... + 26248.

It is an arithmetic number, because the mean of its divisors is an integer number (2688532).

Almost surely, 2^20958673 is an apocalyptic number.

It is an amenable number.

20958673 is a deficient number, since it is larger than the sum of its proper divisors (549583).

20958673 is an equidigital number, since it uses as much as digits as its factorization.

20958673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 20958673 is about 4578.0643289495. The cubic root of 20958673 is about 275.7113177407.

The spelling of 20958673 in words is "twenty million, nine hundred fifty-eight thousand, six hundred seventy-three".