16246987 has 4 divisors (see below), whose sum is σ = 16398936. Its totient is φ = 16095040.

The previous prime is 16246969. The next prime is 16246999. The reversal of 16246987 is 78964261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78964261 = 7547 ⋅10463.

It is a cyclic number.

It is not a de Polignac number, because 16246987 - 2¹⁹ = 15722699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16246907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75814 + ... + 76027.

It is an arithmetic number, because the mean of its divisors is an integer number (4099734).

Almost surely, 2^16246987 is an apocalyptic number.

16246987 is a deficient number, since it is larger than the sum of its proper divisors (151949).

16246987 is a wasteful number, since it uses less digits than its factorization.

16246987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151948.

The product of its digits is 145152, while the sum is 43.

The square root of 16246987 is about 4030.7551401691. The cubic root of 16246987 is about 253.2741953757.

The spelling of 16246987 in words is "sixteen million, two hundred forty-six thousand, nine hundred eighty-seven".