16505080 has 16 divisors (see below), whose sum is σ = 37136520. Its totient is φ = 6602016.

The previous prime is 16505063. The next prime is 16505087. The reversal of 16505080 is 8050561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206274 + ... + 206353.

Almost surely, 2^16505080 is an apocalyptic number.

16505080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16505080 is an abundant number, since it is smaller than the sum of its proper divisors (20631440).

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

16505080 is a wasteful number, since it uses less digits than its factorization.

16505080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412638 (or 412634 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 16505080 is about 4062.6444589700. The cubic root of 16505080 is about 254.6082926186.

The spelling of 16505080 in words is "sixteen million, five hundred five thousand, eighty".