20384378 has 32 divisors (see below), whose sum is σ = 37065600. Its totient is φ = 8213184.

The previous prime is 20384363. The next prime is 20384381. The reversal of 20384378 is 87348302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52208 + ... + 52596.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^20384378 is an apocalyptic number.

20384378 is a deficient number, since it is larger than the sum of its proper divisors (16681222).

20384378 is a wasteful number, since it uses less digits than its factorization.

20384378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 20384378 is about 4514.9062005760. The cubic root of 20384378 is about 273.1696763053.

The spelling of 20384378 in words is "twenty million, three hundred eighty-four thousand, three hundred seventy-eight".