16563242 has 8 divisors (see below), whose sum is σ = 25313796. Its totient is φ = 8125312.

The previous prime is 16563187. The next prime is 16563257. The reversal of 16563242 is 24236561.

It can be written as a sum of positive squares in 2 ways, for example, as 16152361 + 410881 = 4019^2 + 641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78023 + ... + 78234.

Almost surely, 2^16563242 is an apocalyptic number.

16563242 is a deficient number, since it is larger than the sum of its proper divisors (8750554).

16563242 is a wasteful number, since it uses less digits than its factorization.

16563242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156312.

The product of its digits is 8640, while the sum is 29.

The square root of 16563242 is about 4069.7963093993. The cubic root of 16563242 is about 254.9070121032.

The spelling of 16563242 in words is "sixteen million, five hundred sixty-three thousand, two hundred forty-two".