20365146 has 12 divisors (see below), whose sum is σ = 44124522. Its totient is φ = 6788376.

The previous prime is 20365141. The next prime is 20365157. The reversal of 20365146 is 64156302.

20365146 is a `hidden beast` number, since 2 + 0 + 3 + 651 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17264025 + 3101121 = 4155^2 + 1761^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20365141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565681 + ... + 565716.

Almost surely, 2^20365146 is an apocalyptic number.

20365146 is an abundant number, since it is smaller than the sum of its proper divisors (23759376).

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

20365146 is a wasteful number, since it uses less digits than its factorization.

20365146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131405 (or 1131402 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20365146 is about 4512.7758641439. The cubic root of 20365146 is about 273.0837403615.

The spelling of 20365146 in words is "twenty million, three hundred sixty-five thousand, one hundred forty-six".