20384265 has 32 divisors (see below), whose sum is σ = 35908992. Its totient is φ = 9873600.

The previous prime is 20384263. The next prime is 20384269. The reversal of 20384265 is 56248302.

It is not a de Polignac number, because 20384265 - 2¹ = 20384263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20384261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19455 + ... + 20475.

It is an arithmetic number, because the mean of its divisors is an integer number (1122156).

Almost surely, 2^20384265 is an apocalyptic number.

It is an amenable number.

20384265 is a deficient number, since it is larger than the sum of its proper divisors (15524727).

20384265 is a wasteful number, since it uses less digits than its factorization.

20384265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20384265 is about 4514.8936864560. The cubic root of 20384265 is about 273.1691715359.

The spelling of 20384265 in words is "twenty million, three hundred eighty-four thousand, two hundred sixty-five".