20164308 has 12 divisors (see below), whose sum is σ = 47050080. Its totient is φ = 6721432.

The previous prime is 20164283. The next prime is 20164321. The reversal of 20164308 is 80346102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×20164308³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840168 + ... + 840191.

It is an arithmetic number, because the mean of its divisors is an integer number (3920840).

Almost surely, 2^20164308 is an apocalyptic number.

It is an amenable number.

20164308 is an abundant number, since it is smaller than the sum of its proper divisors (26885772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20164308 is a wasteful number, since it uses less digits than its factorization.

20164308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680366 (or 1680364 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20164308 is about 4490.4685724321. The cubic root of 20164308 is about 272.1830695199.

The spelling of 20164308 in words is "twenty million, one hundred sixty-four thousand, three hundred eight".