20958337 has 8 divisors (see below), whose sum is σ = 21484736. Its totient is φ = 20438352.

The previous prime is 20958323. The next prime is 20958341. The reversal of 20958337 is 73385902.

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

It is a cyclic number.

It is not a de Polignac number, because 20958337 - 2²³ = 12569729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20958296 and 20958305.

It is not an unprimeable number, because it can be changed into a prime (20958307) 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 7 ways as a sum of consecutive naturals, for example, 5383 + ... + 8419.

It is an arithmetic number, because the mean of its divisors is an integer number (2685592).

Almost surely, 2^20958337 is an apocalyptic number.

It is an amenable number.

20958337 is a deficient number, since it is larger than the sum of its proper divisors (526399).

20958337 is a wasteful number, since it uses less digits than its factorization.

20958337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 20958337 is about 4578.0276320704. The cubic root of 20958337 is about 275.7098443730.

The spelling of 20958337 in words is "twenty million, nine hundred fifty-eight thousand, three hundred thirty-seven".