135549720 has 64 divisors (see below), whose sum is σ = 451836000. Its totient is φ = 36146304.

The previous prime is 135549709. The next prime is 135549737. The reversal of 135549720 is 27945531.

135549720 is a `hidden beast` number, since 13 + 554 + 97 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 61675 + ... + 63834.

Almost surely, 2^135549720 is an apocalyptic number.

135549720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135549720 is an abundant number, since it is smaller than the sum of its proper divisors (316286280).

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

135549720 is a wasteful number, since it uses less digits than its factorization.

135549720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125529 (or 125519 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 135549720 is about 11642.5821878138. The cubic root of 135549720 is about 513.6881432266.

The spelling of 135549720 in words is "one hundred thirty-five million, five hundred forty-nine thousand, seven hundred twenty".