20248971 has 4 divisors (see below), whose sum is σ = 26998632. Its totient is φ = 13499312.

The previous prime is 20248967. The next prime is 20248999. The reversal of 20248971 is 17984202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20248971 - 2² = 20248967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20248961) 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, 3374826 + ... + 3374831.

It is an arithmetic number, because the mean of its divisors is an integer number (6749658).

Almost surely, 2^20248971 is an apocalyptic number.

20248971 is a deficient number, since it is larger than the sum of its proper divisors (6749661).

20248971 is an equidigital number, since it uses as much as digits as its factorization.

20248971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749660.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 20248971 is about 4499.8856652142. The cubic root of 20248971 is about 272.5634720143.

The spelling of 20248971 in words is "twenty million, two hundred forty-eight thousand, nine hundred seventy-one".