16287645 has 16 divisors (see below), whose sum is σ = 28429632. Its totient is φ = 7896960.

The previous prime is 16287629. The next prime is 16287653. The reversal of 16287645 is 54678261.

It is not a de Polignac number, because 16287645 - 2⁴ = 16287629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49192 + ... + 49521.

It is an arithmetic number, because the mean of its divisors is an integer number (1776852).

Almost surely, 2^16287645 is an apocalyptic number.

16287645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16287645 is a deficient number, since it is larger than the sum of its proper divisors (12141987).

16287645 is a wasteful number, since it uses less digits than its factorization.

16287645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98732.

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

The square root of 16287645 is about 4035.7954606248. The cubic root of 16287645 is about 253.4852918340.

It can be divided in two parts, 16 and 287645, that added together give a triangular number (287661 = T₇₅₈).

The spelling of 16287645 in words is "sixteen million, two hundred eighty-seven thousand, six hundred forty-five".