135724530 has 32 divisors (see below), whose sum is σ = 328126464. Its totient is φ = 35927936.

The previous prime is 135724517. The next prime is 135724531. The reversal of 135724530 is 35427531.

It is a super-2 number, since 2×135724530² = 36842296087441800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (135724531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12402 + ... + 20621.

It is an arithmetic number, because the mean of its divisors is an integer number (10253952).

Almost surely, 2^135724530 is an apocalyptic number.

135724530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135724530 is an abundant number, since it is smaller than the sum of its proper divisors (192401934).

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

135724530 is a wasteful number, since it uses less digits than its factorization.

135724530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33170.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 135724530 is about 11650.0871241377. The cubic root of 135724530 is about 513.9088721953.

The spelling of 135724530 in words is "one hundred thirty-five million, seven hundred twenty-four thousand, five hundred thirty".