16247745 has 24 divisors (see below), whose sum is σ = 28394496. Its totient is φ = 8594208.

The previous prime is 16247719. The next prime is 16247747. The reversal of 16247745 is 54774261.

Together with 12146750 it forms a betrothed pair.

It is not a de Polignac number, because 16247745 - 2⁹ = 16247233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16247747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4294 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (1183104).

Almost surely, 2^16247745 is an apocalyptic number.

16247745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16247745 is a deficient number, since it is larger than the sum of its proper divisors (12146751).

16247745 is a wasteful number, since it uses less digits than its factorization.

16247745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2978 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 16247745 is about 4030.8491661187. The cubic root of 16247745 is about 253.2781341338.

The spelling of 16247745 in words is "sixteen million, two hundred forty-seven thousand, seven hundred forty-five".