16280347 has 4 divisors (see below), whose sum is σ = 16307776. Its totient is φ = 16252920.

The previous prime is 16280323. The next prime is 16280353. The reversal of 16280347 is 74308261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74308261 = 1621 ⋅45841.

It is a cyclic number.

It is not a de Polignac number, because 16280347 - 2⁷ = 16280219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16280447) 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, 12804 + ... + 14017.

It is an arithmetic number, because the mean of its divisors is an integer number (4076944).

Almost surely, 2^16280347 is an apocalyptic number.

16280347 is a deficient number, since it is larger than the sum of its proper divisors (27429).

16280347 is an equidigital number, since it uses as much as digits as its factorization.

16280347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27428.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 16280347 is about 4034.8912005158. The cubic root of 16280347 is about 253.4474264862.

The spelling of 16280347 in words is "sixteen million, two hundred eighty thousand, three hundred forty-seven".