16243247 has 4 divisors (see below), whose sum is σ = 16588896. Its totient is φ = 15897600.

The previous prime is 16243229. The next prime is 16243273. The reversal of 16243247 is 74234261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74234261 = 8389 ⋅8849.

It is a cyclic number.

It is not a de Polignac number, because 16243247 - 2¹² = 16239151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16243147) 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 in 3 ways as a sum of consecutive naturals, for example, 172754 + ... + 172847.

It is an arithmetic number, because the mean of its divisors is an integer number (4147224).

Almost surely, 2^16243247 is an apocalyptic number.

16243247 is a deficient number, since it is larger than the sum of its proper divisors (345649).

16243247 is an equidigital number, since it uses as much as digits as its factorization.

16243247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345648.

The product of its digits is 8064, while the sum is 29.

The square root of 16243247 is about 4030.2911805476. The cubic root of 16243247 is about 253.2547596041.

It can be divided in two parts, 1624 and 3247, that multiplied together give a triangular number (5273128 = T₃₂₄₇).

The spelling of 16243247 in words is "sixteen million, two hundred forty-three thousand, two hundred forty-seven".