20051384 has 48 divisors (see below), whose sum is σ = 40736520. Its totient is φ = 9247680.

The previous prime is 20051363. The next prime is 20051407. The reversal of 20051384 is 48315002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152999 + ... + 153129.

Almost surely, 2^20051384 is an apocalyptic number.

It is an amenable number.

20051384 is an abundant number, since it is smaller than the sum of its proper divisors (20685136).

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

20051384 is a wasteful number, since it uses less digits than its factorization.

20051384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20051384 is about 4477.8771756269. The cubic root of 20051384 is about 271.6740255868.

Adding to 20051384 its reverse (48315002), we get a palindrome (68366386).

The spelling of 20051384 in words is "twenty million, fifty-one thousand, three hundred eighty-four".