16057985 has 8 divisors (see below), whose sum is σ = 19294440. Its totient is φ = 12829824.

The previous prime is 16057981. The next prime is 16057997. The reversal of 16057985 is 58975061.

It can be written as a sum of positive squares in 4 ways, for example, as 2982529 + 13075456 = 1727^2 + 3616^2 .

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 16057985 - 2² = 16057981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16057981) 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, 3611 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (2411805).

Almost surely, 2^16057985 is an apocalyptic number.

It is an amenable number.

16057985 is a deficient number, since it is larger than the sum of its proper divisors (3236455).

16057985 is a wasteful number, since it uses less digits than its factorization.

16057985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 16057985 is about 4007.2415699581. The cubic root of 16057985 is about 252.2882451687.

The spelling of 16057985 in words is "sixteen million, fifty-seven thousand, nine hundred eighty-five".