16224861 has 8 divisors (see below), whose sum is σ = 21688704. Its totient is φ = 10788800.

The previous prime is 16224839. The next prime is 16224881. The reversal of 16224861 is 16842261.

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 16224861 - 2⁵ = 16224829 is a prime.

It is a super-2 number, since 2×16224861² = 526492228938642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16224881) 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, 5541 + ... + 7946.

It is an arithmetic number, because the mean of its divisors is an integer number (2711088).

Almost surely, 2^16224861 is an apocalyptic number.

It is an amenable number.

16224861 is a deficient number, since it is larger than the sum of its proper divisors (5463843).

16224861 is a wasteful number, since it uses less digits than its factorization.

16224861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13891.

The product of its digits is 4608, while the sum is 30.

The square root of 16224861 is about 4028.0095580820. The cubic root of 16224861 is about 253.1591691109.

The spelling of 16224861 in words is "sixteen million, two hundred twenty-four thousand, eight hundred sixty-one".