20948755 has 8 divisors (see below), whose sum is σ = 25199424. Its totient is φ = 16718400.

The previous prime is 20948747. The next prime is 20948779. The reversal of 20948755 is 55784902.

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

It is not a de Polignac number, because 20948755 - 2³ = 20948747 is a prime.

It is a Duffinian number.

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, 2706 + ... + 7015.

It is an arithmetic number, because the mean of its divisors is an integer number (3149928).

Almost surely, 2^20948755 is an apocalyptic number.

20948755 is a deficient number, since it is larger than the sum of its proper divisors (4250669).

20948755 is an equidigital number, since it uses as much as digits as its factorization.

20948755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 20948755 is about 4576.9809918766. The cubic root of 20948755 is about 275.6678204528.

The spelling of 20948755 in words is "twenty million, nine hundred forty-eight thousand, seven hundred fifty-five".