1688241432 has 32 divisors (see below), whose sum is σ = 4232718000. Its totient is φ = 561131904.

The previous prime is 1688241427. The next prime is 1688241473. The reversal of 1688241432 is 2341428861.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92403 + ... + 109154.

Almost surely, 2^1688241432 is an apocalyptic number.

1688241432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1688241432 is an abundant number, since it is smaller than the sum of its proper divisors (2544476568).

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

1688241432 is a wasteful number, since it uses less digits than its factorization.

1688241432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201915 (or 201911 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 1688241432 is about 41088.2152447633. The cubic root of 1688241432 is about 1190.7251263995.

The spelling of 1688241432 in words is "one billion, six hundred eighty-eight million, two hundred forty-one thousand, four hundred thirty-two".