16251244 has 6 divisors (see below), whose sum is σ = 28439684. Its totient is φ = 8125620.

The previous prime is 16251241. The next prime is 16251247. The reversal of 16251244 is 44215261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16251241) and next prime (16251247).

It is not an unprimeable number, because it can be changed into a prime (16251241) 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 as a sum of consecutive naturals, namely, 2031402 + ... + 2031409.

Almost surely, 2^16251244 is an apocalyptic number.

It is an amenable number.

16251244 is a deficient number, since it is larger than the sum of its proper divisors (12188440).

16251244 is a wasteful number, since it uses less digits than its factorization.

16251244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062815 (or 4062813 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 16251244 is about 4031.2831704062. The cubic root of 16251244 is about 253.2963142275.

The spelling of 16251244 in words is "sixteen million, two hundred fifty-one thousand, two hundred forty-four".