135575720 has 64 divisors (see below), whose sum is σ = 349729920. Its totient is φ = 46335744.

The previous prime is 135575719. The next prime is 135575743. The reversal of 135575720 is 27575531.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123494 + ... + 124586.

It is an arithmetic number, because the mean of its divisors is an integer number (5464530).

Almost surely, 2^135575720 is an apocalyptic number.

135575720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135575720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174864960).

135575720 is an abundant number, since it is smaller than the sum of its proper divisors (214154200).

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

135575720 is a wasteful number, since it uses less digits than its factorization.

135575720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 135575720 is about 11643.6987250616. The cubic root of 135575720 is about 513.7209848975.

The spelling of 135575720 in words is "one hundred thirty-five million, five hundred seventy-five thousand, seven hundred twenty".