20384361 has 12 divisors (see below), whose sum is σ = 30459780. Its totient is φ = 13120800.

The previous prime is 20384347. The next prime is 20384363. The reversal of 20384361 is 16348302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14288400 + 6095961 = 3780^2 + 2469^2 .

It is not a de Polignac number, because 20384361 - 2⁶ = 20384297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20384363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38790 + ... + 39311.

It is an arithmetic number, because the mean of its divisors is an integer number (2538315).

Almost surely, 2^20384361 is an apocalyptic number.

It is an amenable number.

20384361 is a deficient number, since it is larger than the sum of its proper divisors (10075419).

20384361 is a wasteful number, since it uses less digits than its factorization.

20384361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78136 (or 78133 counting only the distinct ones).

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

The square root of 20384361 is about 4514.9043179230. The cubic root of 20384361 is about 273.1696003666.

The spelling of 20384361 in words is "twenty million, three hundred eighty-four thousand, three hundred sixty-one".