20384712 has 24 divisors (see below), whose sum is σ = 55208790. Its totient is φ = 6794880.

The previous prime is 20384711. The next prime is 20384719. The reversal of 20384712 is 21748302.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 617796 = 4446^2 + 786^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (20384711) 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, 141489 + ... + 141632.

Almost surely, 2^20384712 is an apocalyptic number.

It is an amenable number.

20384712 is an abundant number, since it is smaller than the sum of its proper divisors (34824078).

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

20384712 is a wasteful number, since it uses less digits than its factorization.

20384712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283133 (or 283126 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20384712 is about 4514.9431890114. The cubic root of 20384712 is about 273.1711682676.

The spelling of 20384712 in words is "twenty million, three hundred eighty-four thousand, seven hundred twelve".