16587642 has 16 divisors (see below), whose sum is σ = 33549120. Its totient is φ = 5466912.

The previous prime is 16587629. The next prime is 16587643. The reversal of 16587642 is 24678561.

It is a self number, because there is not a number n which added to its sum of digits gives 16587642.

It is not an unprimeable number, because it can be changed into a prime (16587643) 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, 14998 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (2096820).

Almost surely, 2^16587642 is an apocalyptic number.

16587642 is an abundant number, since it is smaller than the sum of its proper divisors (16961478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16587642 is a wasteful number, since it uses less digits than its factorization.

16587642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31157.

The product of its digits is 80640, while the sum is 39.

The square root of 16587642 is about 4072.7928992278. The cubic root of 16587642 is about 255.0321220588.

The spelling of 16587642 in words is "sixteen million, five hundred eighty-seven thousand, six hundred forty-two".