135332720 has 20 divisors (see below), whose sum is σ = 314648760. Its totient is φ = 54133056.

The previous prime is 135332719. The next prime is 135332731. The reversal of 135332720 is 27233531.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 135332720.

It is a congruent number.

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, 845750 + ... + 845909.

It is an arithmetic number, because the mean of its divisors is an integer number (15732438).

Almost surely, 2^135332720 is an apocalyptic number.

135332720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135332720 is an abundant number, since it is smaller than the sum of its proper divisors (179316040).

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

135332720 is a wasteful number, since it uses less digits than its factorization.

135332720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691672 (or 1691666 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 135332720 is about 11633.2592165738. The cubic root of 135332720 is about 513.4138776560.

The spelling of 135332720 in words is "one hundred thirty-five million, three hundred thirty-two thousand, seven hundred twenty".