20485167 has 4 divisors (see below), whose sum is σ = 27313560. Its totient is φ = 13656776.

The previous prime is 20485163. The next prime is 20485193. The reversal of 20485167 is 76158402.

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 20485167 - 2² = 20485163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20485163) 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, 3414192 + ... + 3414197.

It is an arithmetic number, because the mean of its divisors is an integer number (6828390).

Almost surely, 2^20485167 is an apocalyptic number.

20485167 is a deficient number, since it is larger than the sum of its proper divisors (6828393).

20485167 is an equidigital number, since it uses as much as digits as its factorization.

20485167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828392.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20485167 is about 4526.0542418314. The cubic root of 20485167 is about 273.6191585067.

The spelling of 20485167 in words is "twenty million, four hundred eighty-five thousand, one hundred sixty-seven".