16280247 has 4 divisors (see below), whose sum is σ = 21707000. Its totient is φ = 10853496.

The previous prime is 16280233. The next prime is 16280269. The reversal of 16280247 is 74208261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74208261 = 3 ⋅24736087.

It is not a de Polignac number, because 16280247 - 2⁶ = 16280183 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 (16280227) 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, 2713372 + ... + 2713377.

It is an arithmetic number, because the mean of its divisors is an integer number (5426750).

Almost surely, 2^16280247 is an apocalyptic number.

16280247 is a deficient number, since it is larger than the sum of its proper divisors (5426753).

16280247 is an equidigital number, since it uses as much as digits as its factorization.

16280247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426752.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 16280247 is about 4034.8788085889. The cubic root of 16280247 is about 253.4469075621.

The spelling of 16280247 in words is "sixteen million, two hundred eighty thousand, two hundred forty-seven".