135728940 has 24 divisors (see below), whose sum is σ = 380041200. Its totient is φ = 36194368.

The previous prime is 135728927. The next prime is 135728963. The reversal of 135728940 is 49827531.

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, 1131015 + ... + 1131134.

It is an arithmetic number, because the mean of its divisors is an integer number (15835050).

Almost surely, 2^135728940 is an apocalyptic number.

135728940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135728940 is an abundant number, since it is smaller than the sum of its proper divisors (244312260).

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

135728940 is a wasteful number, since it uses less digits than its factorization.

135728940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262161 (or 2262159 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 135728940 is about 11650.2763915711. The cubic root of 135728940 is about 513.9144381594.

The spelling of 135728940 in words is "one hundred thirty-five million, seven hundred twenty-eight thousand, nine hundred forty".