135247300 has 72 divisors (see below), whose sum is σ = 306621000. Its totient is φ = 51717120.

The previous prime is 135247279. The next prime is 135247349. The reversal of 135247300 is 3742531.

It can be written as a sum of positive squares in 12 ways, for example, as 106667584 + 28579716 = 10328^2 + 5346^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431944 + ... + 432256.

It is an arithmetic number, because the mean of its divisors is an integer number (4258625).

Almost surely, 2^135247300 is an apocalyptic number.

135247300 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 135247300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153310500).

135247300 is an abundant number, since it is smaller than the sum of its proper divisors (171373700).

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

135247300 is a wasteful number, since it uses less digits than its factorization.

135247300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 135247300 is about 11629.5872669670. The cubic root of 135247300 is about 513.3058351867.

Adding to 135247300 its reverse (3742531), we get a palindrome (138989831).

The spelling of 135247300 in words is "one hundred thirty-five million, two hundred forty-seven thousand, three hundred".