20874153 has 4 divisors (see below), whose sum is σ = 27832208. Its totient is φ = 13916100.

The previous prime is 20874143. The next prime is 20874163. The reversal of 20874153 is 35147802.

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 an interprime number because it is at equal distance from previous prime (20874143) and next prime (20874163).

It is not a de Polignac number, because 20874153 - 2⁴ = 20874137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20874153.

It is not an unprimeable number, because it can be changed into a prime (20874143) 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 3 ways as a sum of consecutive naturals, for example, 3479023 + ... + 3479028.

It is an arithmetic number, because the mean of its divisors is an integer number (6958052).

Almost surely, 2^20874153 is an apocalyptic number.

It is an amenable number.

20874153 is a deficient number, since it is larger than the sum of its proper divisors (6958055).

20874153 is an equidigital number, since it uses as much as digits as its factorization.

20874153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958054.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20874153 is about 4568.8240281280. The cubic root of 20874153 is about 275.3401982562.

The spelling of 20874153 in words is "twenty million, eight hundred seventy-four thousand, one hundred fifty-three".