16287945 has 8 divisors (see below), whose sum is σ = 26060736. Its totient is φ = 8686896.

The previous prime is 16287941. The next prime is 16287961. The reversal of 16287945 is 54978261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16287945 - 2² = 16287941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16287897 and 16287906.

It is not an unprimeable number, because it can be changed into a prime (16287941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542917 + ... + 542946.

It is an arithmetic number, because the mean of its divisors is an integer number (3257592).

Almost surely, 2^16287945 is an apocalyptic number.

16287945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16287945 is a deficient number, since it is larger than the sum of its proper divisors (9772791).

16287945 is a wasteful number, since it uses less digits than its factorization.

16287945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085871.

The product of its digits is 120960, while the sum is 42.

The square root of 16287945 is about 4035.8326278477. The cubic root of 16287945 is about 253.4868481286.

The spelling of 16287945 in words is "sixteen million, two hundred eighty-seven thousand, nine hundred forty-five".