2308987 has 4 divisors (see below), whose sum is σ = 2327296. Its totient is φ = 2290680.

The previous prime is 2308967. The next prime is 2309003. The reversal of 2308987 is 7898032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2308987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2308907) 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, 8964 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (581824).

2^2308987 is an apocalyptic number.

2308987 is a deficient number, since it is larger than the sum of its proper divisors (18309).

2308987 is a wasteful number, since it uses less digits than its factorization.

2308987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18308.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2308987 is about 1519.5351262804. The cubic root of 2308987 is about 132.1723147518.

The spelling of 2308987 in words is "two million, three hundred eight thousand, nine hundred eighty-seven".