16487947 has 8 divisors (see below), whose sum is σ = 19030752. Its totient is φ = 13992000.

The previous prime is 16487927. The next prime is 16487957. The reversal of 16487947 is 74978461.

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

It is a cyclic number.

It is not a de Polignac number, because 16487947 - 2⁷ = 16487819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16487897 and 16487906.

It is not an unprimeable number, because it can be changed into a prime (16487927) 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, 10954 + ... + 12367.

It is an arithmetic number, because the mean of its divisors is an integer number (2378844).

Almost surely, 2^16487947 is an apocalyptic number.

16487947 is a deficient number, since it is larger than the sum of its proper divisors (2542805).

16487947 is a wasteful number, since it uses less digits than its factorization.

16487947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23429.

The product of its digits is 338688, while the sum is 46.

The square root of 16487947 is about 4060.5353095374. The cubic root of 16487947 is about 254.5201639105.

The spelling of 16487947 in words is "sixteen million, four hundred eighty-seven thousand, nine hundred forty-seven".