16135640 has 16 divisors (see below), whose sum is σ = 36305280. Its totient is φ = 6454240.

The previous prime is 16135633. The next prime is 16135643. The reversal of 16135640 is 4653161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16135643) 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, 201656 + ... + 201735.

It is an arithmetic number, because the mean of its divisors is an integer number (2269080).

Almost surely, 2^16135640 is an apocalyptic number.

16135640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16135640 is an abundant number, since it is smaller than the sum of its proper divisors (20169640).

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

16135640 is a wasteful number, since it uses less digits than its factorization.

16135640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403402 (or 403398 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16135640 is about 4016.9192175099. The cubic root of 16135640 is about 252.6942726045.

The spelling of 16135640 in words is "sixteen million, one hundred thirty-five thousand, six hundred forty".