20229164 has 6 divisors (see below), whose sum is σ = 35401044. Its totient is φ = 10114580.

The previous prime is 20229161. The next prime is 20229179. The reversal of 20229164 is 46192202.

It is a super-2 number, since 2×20229164² = 818438152277792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20229161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528642 + ... + 2528649.

It is an arithmetic number, because the mean of its divisors is an integer number (5900174).

Almost surely, 2^20229164 is an apocalyptic number.

It is an amenable number.

20229164 is a deficient number, since it is larger than the sum of its proper divisors (15171880).

20229164 is a wasteful number, since it uses less digits than its factorization.

20229164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057295 (or 5057293 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20229164 is about 4497.6842930557. The cubic root of 20229164 is about 272.4745715969.

The spelling of 20229164 in words is "twenty million, two hundred twenty-nine thousand, one hundred sixty-four".