16122587 has 4 divisors (see below), whose sum is σ = 17362800. Its totient is φ = 14882376.

The previous prime is 16122581. The next prime is 16122599. The reversal of 16122587 is 78522161.

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

It is a cyclic number.

It is not a de Polignac number, because 16122587 - 2¹⁸ = 15860443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16122581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620087 + ... + 620112.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700).

Almost surely, 2^16122587 is an apocalyptic number.

16122587 is a deficient number, since it is larger than the sum of its proper divisors (1240213).

16122587 is a wasteful number, since it uses less digits than its factorization.

16122587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240212.

The product of its digits is 6720, while the sum is 32.

The square root of 16122587 is about 4015.2941361748. The cubic root of 16122587 is about 252.6261148253.

The spelling of 16122587 in words is "sixteen million, one hundred twenty-two thousand, five hundred eighty-seven".