135649740 has 96 divisors (see below), whose sum is σ = 402232320. Its totient is φ = 34062336.

The previous prime is 135649729. The next prime is 135649763. The reversal of 135649740 is 47946531.

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 31 ways as a sum of consecutive naturals, for example, 292749 + ... + 293211.

It is an arithmetic number, because the mean of its divisors is an integer number (4189920).

Almost surely, 2^135649740 is an apocalyptic number.

135649740 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 135649740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201116160).

135649740 is an abundant number, since it is smaller than the sum of its proper divisors (266582580).

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

135649740 is a wasteful number, since it uses less digits than its factorization.

135649740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 135649740 is about 11646.8768345853. The cubic root of 135649740 is about 513.8144596217.

The spelling of 135649740 in words is "one hundred thirty-five million, six hundred forty-nine thousand, seven hundred forty".