16288261 has 8 divisors (see below), whose sum is σ = 18814464. Its totient is φ = 13936320.

The previous prime is 16288253. The next prime is 16288267.

16288261 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16288261 - 2³ = 16288253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16288267) 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, 43365 + ... + 43738.

It is an arithmetic number, because the mean of its divisors is an integer number (2351808).

Almost surely, 2^16288261 is an apocalyptic number.

16288261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16288261 is a deficient number, since it is larger than the sum of its proper divisors (2526203).

16288261 is a wasteful number, since it uses less digits than its factorization.

16288261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87131.

The product of its digits is 9216, while the sum is 34.

The square root of 16288261 is about 4035.8717769523. The cubic root of 16288261 is about 253.4884874049.

It can be divided in two parts, 1628 and 8261, that added together give a palindrome (9889).

The spelling of 16288261 in words is "sixteen million, two hundred eighty-eight thousand, two hundred sixty-one".