135656880 has 40 divisors (see below), whose sum is σ = 420537072. Its totient is φ = 36175104.

The previous prime is 135656869. The next prime is 135656881. The reversal of 135656880 is 88656531.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (135656881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282379 + ... + 282858.

Almost surely, 2^135656880 is an apocalyptic number.

135656880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135656880 is an abundant number, since it is smaller than the sum of its proper divisors (284880192).

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

135656880 is a wasteful number, since it uses less digits than its factorization.

135656880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565253 (or 565247 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 135656880 is about 11647.1833504929. The cubic root of 135656880 is about 513.8234744342.

The spelling of 135656880 in words is "one hundred thirty-five million, six hundred fifty-six thousand, eight hundred eighty".