20948345 has 8 divisors (see below), whose sum is σ = 27423360. Its totient is φ = 15235120.

The previous prime is 20948339. The next prime is 20948359. The reversal of 20948345 is 54384902.

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

It is not a de Polignac number, because 20948345 - 2¹⁸ = 20686201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190385 + ... + 190494.

It is an arithmetic number, because the mean of its divisors is an integer number (3427920).

Almost surely, 2^20948345 is an apocalyptic number.

It is an amenable number.

20948345 is a deficient number, since it is larger than the sum of its proper divisors (6475015).

20948345 is a wasteful number, since it uses less digits than its factorization.

20948345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380895.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 20948345 is about 4576.9362023083. The cubic root of 20948345 is about 275.6660220238. Note that the first 3 decimals are identical.

The spelling of 20948345 in words is "twenty million, nine hundred forty-eight thousand, three hundred forty-five".