20163484 has 48 divisors (see below), whose sum is σ = 41126400. Its totient is φ = 8553600.

The previous prime is 20163469. The next prime is 20163491. The reversal of 20163484 is 48436102.

It is a congruent number.

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, 74269 + ... + 74539.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^20163484 is an apocalyptic number.

It is an amenable number.

20163484 is an abundant number, since it is smaller than the sum of its proper divisors (20962916).

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

20163484 is a wasteful number, since it uses less digits than its factorization.

20163484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20163484 is about 4490.3768216042. The cubic root of 20163484 is about 272.1793619473.

Adding to 20163484 its reverse (48436102), we get a palindrome (68599586).

The spelling of 20163484 in words is "twenty million, one hundred sixty-three thousand, four hundred eighty-four".