16631244 has 60 divisors (see below), whose sum is σ = 49695184. Its totient is φ = 4751136.

The previous prime is 16631233. The next prime is 16631249. The reversal of 16631244 is 44213661.

16631244 is a `hidden beast` number, since 1 + 6 + 631 + 24 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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 19 ways as a sum of consecutive naturals, for example, 1399 + ... + 5934.

Almost surely, 2^16631244 is an apocalyptic number.

16631244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16631244 is an abundant number, since it is smaller than the sum of its proper divisors (33063940).

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

16631244 is a wasteful number, since it uses less digits than its factorization.

16631244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7356 (or 7345 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 16631244 is about 4078.1422241016. The cubic root of 16631244 is about 255.2553842839.

The spelling of 16631244 in words is "sixteen million, six hundred thirty-one thousand, two hundred forty-four".