16631242 has 8 divisors (see below), whose sum is σ = 25018596. Its totient is φ = 8291712.

The previous prime is 16631233. The next prime is 16631249. The reversal of 16631242 is 24213661.

It can be written as a sum of positive squares in 2 ways, for example, as 13905441 + 2725801 = 3729^2 + 1651^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16631249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11073 + ... + 12484.

Almost surely, 2^16631242 is an apocalyptic number.

16631242 is a deficient number, since it is larger than the sum of its proper divisors (8387354).

16631242 is a wasteful number, since it uses less digits than its factorization.

16631242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23912.

The product of its digits is 1728, while the sum is 25.

The square root of 16631242 is about 4078.1419788919. The cubic root of 16631242 is about 255.2553740519.

The spelling of 16631242 in words is "sixteen million, six hundred thirty-one thousand, two hundred forty-two".