20384994 has 32 divisors (see below), whose sum is σ = 46730880. Its totient is φ = 5807232.

The previous prime is 20384977. The next prime is 20385059. The reversal of 20384994 is 49948302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23472 + ... + 24324.

It is an arithmetic number, because the mean of its divisors is an integer number (1460340).

Almost surely, 2^20384994 is an apocalyptic number.

20384994 is an abundant number, since it is smaller than the sum of its proper divisors (26345886).

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

20384994 is a wasteful number, since it uses less digits than its factorization.

20384994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20384994 is about 4514.9744185322. The cubic root of 20384994 is about 273.1724279357.

The spelling of 20384994 in words is "twenty million, three hundred eighty-four thousand, nine hundred ninety-four".