20384245 has 48 divisors (see below), whose sum is σ = 31190400. Its totient is φ = 12700800.

The previous prime is 20384239. The next prime is 20384251. The reversal of 20384245 is 54248302.

It is an interprime number because it is at equal distance from previous prime (20384239) and next prime (20384251).

It is not a de Polignac number, because 20384245 - 2⁵ = 20384213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134920 + ... + 135070.

It is an arithmetic number, because the mean of its divisors is an integer number (649800).

Almost surely, 2^20384245 is an apocalyptic number.

It is an amenable number.

20384245 is a deficient number, since it is larger than the sum of its proper divisors (10806155).

20384245 is a wasteful number, since it uses less digits than its factorization.

20384245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 20384245 is about 4514.8914715639. The cubic root of 20384245 is about 273.1690821960.

It can be divided in two parts, 203 and 84245, that added together give a palindrome (84448).

The spelling of 20384245 in words is "twenty million, three hundred eighty-four thousand, two hundred forty-five".