16290261 has 16 divisors (see below), whose sum is σ = 25990720. Its totient is φ = 10024560.

The previous prime is 16290229. The next prime is 16290269. The reversal of 16290261 is 16209261.

16290261 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 16290261 - 2⁵ = 16290229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16290269) 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 15 ways as a sum of consecutive naturals, for example, 22855 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (1624420).

Almost surely, 2^16290261 is an apocalyptic number.

It is an amenable number.

16290261 is a deficient number, since it is larger than the sum of its proper divisors (9700459).

16290261 is a wasteful number, since it uses less digits than its factorization.

16290261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46433 (or 46427 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16290261 is about 4036.1195472880. The cubic root of 16290261 is about 253.4988620796.

The spelling of 16290261 in words is "sixteen million, two hundred ninety thousand, two hundred sixty-one".