16220727 has 18 divisors (see below), whose sum is σ = 24500112. Its totient is φ = 10340616.

The previous prime is 16220713. The next prime is 16220759. The reversal of 16220727 is 72702261.

It is not a de Polignac number, because 16220727 - 2¹² = 16216631 is a prime.

It is a super-2 number, since 2×16220727² = 526223968817058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16220727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3058 + ... + 6464.

Almost surely, 2^16220727 is an apocalyptic number.

16220727 is a deficient number, since it is larger than the sum of its proper divisors (8279385).

16220727 is a wasteful number, since it uses less digits than its factorization.

16220727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459 (or 3433 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 16220727 is about 4027.4963687134. The cubic root of 16220727 is about 253.1376661243.

Adding to 16220727 its reverse (72702261), we get a palindrome (88922988).

The spelling of 16220727 in words is "sixteen million, two hundred twenty thousand, seven hundred twenty-seven".