1688080272 has 20 divisors (see below), whose sum is σ = 4360874160. Its totient is φ = 562693408.

The previous prime is 1688080253. The next prime is 1688080313. The reversal of 1688080272 is 2720808861.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17584122 + ... + 17584217.

It is an arithmetic number, because the mean of its divisors is an integer number (218043708).

Almost surely, 2^1688080272 is an apocalyptic number.

1688080272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1688080272 is an abundant number, since it is smaller than the sum of its proper divisors (2672793888).

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

1688080272 is a wasteful number, since it uses less digits than its factorization.

1688080272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35168350 (or 35168344 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 1688080272 is about 41086.2540516898. The cubic root of 1688080272 is about 1190.6872362091.

The spelling of 1688080272 in words is "one billion, six hundred eighty-eight million, eighty thousand, two hundred seventy-two".