135230720 has 36 divisors (see below), whose sum is σ = 323922900. Its totient is φ = 54091776.

The previous prime is 135230713. The next prime is 135230749. The reversal of 135230720 is 27032531.

It can be written as a sum of positive squares in 2 ways, for example, as 87011584 + 48219136 = 9328^2 + 6944^2 .

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, 51545 + ... + 54104.

Almost surely, 2^135230720 is an apocalyptic number.

135230720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135230720 is an abundant number, since it is smaller than the sum of its proper divisors (188692180).

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

135230720 is an equidigital number, since it uses as much as digits as its factorization.

135230720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105670 (or 105656 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 135230720 is about 11628.8744081274. The cubic root of 135230720 is about 513.2848588997.

The spelling of 135230720 in words is "one hundred thirty-five million, two hundred thirty thousand, seven hundred twenty".