16501116 has 24 divisors (see below), whose sum is σ = 39831120. Its totient is φ = 5310592.

The previous prime is 16501109. The next prime is 16501117. The reversal of 16501116 is 61110561.

It is a junction number, because it is equal to n+sod(n) for n = 16501092 and 16501101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501117) 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, 23361 + ... + 24056.

It is an arithmetic number, because the mean of its divisors is an integer number (1659630).

Almost surely, 2^16501116 is an apocalyptic number.

It is an amenable number.

16501116 is an abundant number, since it is smaller than the sum of its proper divisors (23330004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16501116 is a wasteful number, since it uses less digits than its factorization.

16501116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47453 (or 47451 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 16501116 is about 4062.1565700992. The cubic root of 16501116 is about 254.5879080243.

Adding to 16501116 its reverse (61110561), we get a palindrome (77611677).

The spelling of 16501116 in words is "sixteen million, five hundred one thousand, one hundred sixteen".