20166264 has 48 divisors (see below), whose sum is σ = 54966600. Its totient is φ = 6679104.

The previous prime is 20166247. The next prime is 20166287. The reversal of 20166264 is 46266102.

It is a happy number.

20166264 is a `hidden beast` number, since 20 + 16 + 626 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11647 + ... + 13265.

Almost surely, 2^20166264 is an apocalyptic number.

20166264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20166264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27483300).

20166264 is an abundant number, since it is smaller than the sum of its proper divisors (34800336).

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

20166264 is a wasteful number, since it uses less digits than its factorization.

20166264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20166264 is about 4490.6863617937. The cubic root of 20166264 is about 272.1918701008.

The spelling of 20166264 in words is "twenty million, one hundred sixty-six thousand, two hundred sixty-four".