20948273 has 4 divisors (see below), whose sum is σ = 21099120. Its totient is φ = 20797428.

The previous prime is 20948261. The next prime is 20948321. The reversal of 20948273 is 37284902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20948273 - 2⁸ = 20948017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20948173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75215 + ... + 75492.

It is an arithmetic number, because the mean of its divisors is an integer number (5274780).

Almost surely, 2^20948273 is an apocalyptic number.

It is an amenable number.

20948273 is a deficient number, since it is larger than the sum of its proper divisors (150847).

20948273 is a wasteful number, since it uses less digits than its factorization.

20948273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150846.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 20948273 is about 4576.9283367778. The cubic root of 20948273 is about 275.6657061998.

The spelling of 20948273 in words is "twenty million, nine hundred forty-eight thousand, two hundred seventy-three".