135387740 has 36 divisors (see below), whose sum is σ = 291490248. Its totient is φ = 52821120.

The previous prime is 135387739. The next prime is 135387743. The reversal of 135387740 is 47783531.

It is a junction number, because it is equal to n+sod(n) for n = 135387694 and 135387703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135387743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31607 + ... + 35633.

Almost surely, 2^135387740 is an apocalyptic number.

135387740 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 135387740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145745124).

135387740 is an abundant number, since it is smaller than the sum of its proper divisors (156102508).

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

135387740 is a wasteful number, since it uses less digits than its factorization.

135387740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118 (or 4075 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 135387740 is about 11635.6237477842. The cubic root of 135387740 is about 513.4834449769.

The spelling of 135387740 in words is "one hundred thirty-five million, three hundred eighty-seven thousand, seven hundred forty".