20164827 has 4 divisors (see below), whose sum is σ = 26886440. Its totient is φ = 13443216.

The previous prime is 20164783. The next prime is 20164847. The reversal of 20164827 is 72846102.

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

It is not a de Polignac number, because 20164827 - 2⁶ = 20164763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20164794 and 20164803.

It is not an unprimeable number, because it can be changed into a prime (20164847) 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, 3360802 + ... + 3360807.

It is an arithmetic number, because the mean of its divisors is an integer number (6721610).

Almost surely, 2^20164827 is an apocalyptic number.

20164827 is a deficient number, since it is larger than the sum of its proper divisors (6721613).

20164827 is an equidigital number, since it uses as much as digits as its factorization.

20164827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721612.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20164827 is about 4490.5263611296. The cubic root of 20164827 is about 272.1854046988.

The spelling of 20164827 in words is "twenty million, one hundred sixty-four thousand, eight hundred twenty-seven".