135247530 has 32 divisors (see below), whose sum is σ = 354103488. Its totient is φ = 32787200.

The previous prime is 135247439. The next prime is 135247531. The reversal of 135247530 is 35742531.

135247530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×135247530² = 36583788742201800, 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 (135247531) 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, 204591 + ... + 205250.

It is an arithmetic number, because the mean of its divisors is an integer number (11065734).

Almost surely, 2^135247530 is an apocalyptic number.

135247530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135247530 is an abundant number, since it is smaller than the sum of its proper divisors (218855958).

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

135247530 is a wasteful number, since it uses less digits than its factorization.

135247530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409862.

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

The square root of 135247530 is about 11629.5971555338. The cubic root of 135247530 is about 513.3061261606.

The spelling of 135247530 in words is "one hundred thirty-five million, two hundred forty-seven thousand, five hundred thirty".