16442261 has 8 divisors (see below), whose sum is σ = 17966784. Its totient is φ = 14922720.

The previous prime is 16442197. The next prime is 16442287. The reversal of 16442261 is 16224461.

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 16442261 - 2⁶ = 16442197 is a prime.

It is a super-3 number, since 3×16442261³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16442261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442161) 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, 10640 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (2245848).

Almost surely, 2^16442261 is an apocalyptic number.

16442261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16442261 is a deficient number, since it is larger than the sum of its proper divisors (1524523).

16442261 is a wasteful number, since it uses less digits than its factorization.

16442261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its digits is 2304, while the sum is 26.

The square root of 16442261 is about 4054.9057942201. The cubic root of 16442261 is about 254.2848654693.

The spelling of 16442261 in words is "sixteen million, four hundred forty-two thousand, two hundred sixty-one".