16281244 has 12 divisors (see below), whose sum is σ = 32562544. Its totient is φ = 6977664.

The previous prime is 16281191. The next prime is 16281247. The reversal of 16281244 is 44218261.

16281244 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 581473 = 16281244 / (1 + 6 + 2 + 8 + 1 + 2 + 4 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16281247) 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, 290709 + ... + 290764.

Almost surely, 2^16281244 is an apocalyptic number.

16281244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16281244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16281244 is a wasteful number, since it uses less digits than its factorization.

16281244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581484 (or 581482 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 16281244 is about 4035.0023543983. The cubic root of 16281244 is about 253.4520811406.

It can be divided in two parts, 162 and 81244, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 16281244 in words is "sixteen million, two hundred eighty-one thousand, two hundred forty-four".