16303987 has 8 divisors (see below), whose sum is σ = 19443456. Its totient is φ = 13367112.

The previous prime is 16303949. The next prime is 16304017. The reversal of 16303987 is 78930361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16303987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16303907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50473 + ... + 50794.

It is an arithmetic number, because the mean of its divisors is an integer number (2430432).

Almost surely, 2^16303987 is an apocalyptic number.

16303987 is a deficient number, since it is larger than the sum of its proper divisors (3139469).

16303987 is a wasteful number, since it uses less digits than its factorization.

16303987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101297.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 16303987 is about 4037.8195848750. The cubic root of 16303987 is about 253.5700405701.

The spelling of 16303987 in words is "sixteen million, three hundred three thousand, nine hundred eighty-seven".