16563948 has 12 divisors (see below), whose sum is σ = 38649240. Its totient is φ = 5521312.

The previous prime is 16563947. The next prime is 16563949. The reversal of 16563948 is 84936561.

It is an interprime number because it is at equal distance from previous prime (16563947) and next prime (16563949).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (16563947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690153 + ... + 690176.

It is an arithmetic number, because the mean of its divisors is an integer number (3220770).

Almost surely, 2^16563948 is an apocalyptic number.

It is an amenable number.

16563948 is an abundant number, since it is smaller than the sum of its proper divisors (22085292).

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

16563948 is a wasteful number, since it uses less digits than its factorization.

16563948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380336 (or 1380334 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 16563948 is about 4069.8830450026. The cubic root of 16563948 is about 254.9106338136.

The spelling of 16563948 in words is "sixteen million, five hundred sixty-three thousand, nine hundred forty-eight".