220016309 has 8 divisors (see below), whose sum is σ = 221483808. Its totient is φ = 218554000.

The previous prime is 220016299. The next prime is 220016323. The reversal of 220016309 is 903610022.

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 220016309 - 2⁸ = 220016053 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 (220016339) 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, 116279 + ... + 118155.

It is an arithmetic number, because the mean of its divisors is an integer number (27685476).

Almost surely, 2^220016309 is an apocalyptic number.

It is an amenable number.

220016309 is a deficient number, since it is larger than the sum of its proper divisors (1467499).

220016309 is a wasteful number, since it uses less digits than its factorization.

220016309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 220016309 is about 14832.9467402806. The cubic root of 220016309 is about 603.6959906364.

The spelling of 220016309 in words is "two hundred twenty million, sixteen thousand, three hundred nine".