135438750 has 80 divisors (see below), whose sum is σ = 376192080. Its totient is φ = 36108000.

The previous prime is 135438731. The next prime is 135438757. The reversal of 135438750 is 57834531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135438757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31744 + ... + 35756.

It is an arithmetic number, because the mean of its divisors is an integer number (4702401).

Almost surely, 2^135438750 is an apocalyptic number.

135438750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135438750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188096040).

135438750 is an abundant number, since it is smaller than the sum of its proper divisors (240753330).

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

135438750 is an equidigital number, since it uses as much as digits as its factorization.

135438750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4023 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 135438750 is about 11637.8155166681. The cubic root of 135438750 is about 513.5479252163.

It can be divided in two parts, 1354 and 38750, that added together give a palindrome (40104).

The spelling of 135438750 in words is "one hundred thirty-five million, four hundred thirty-eight thousand, seven hundred fifty".