135905860 has 96 divisors (see below), whose sum is σ = 316108800. Its totient is φ = 48885120.

The previous prime is 135905839. The next prime is 135905863. The reversal of 135905860 is 68509531.

It is not an unprimeable number, because it can be changed into a prime (135905863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 977671 + ... + 977809.

It is an arithmetic number, because the mean of its divisors is an integer number (3292800).

Almost surely, 2^135905860 is an apocalyptic number.

135905860 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 135905860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158054400).

135905860 is an abundant number, since it is smaller than the sum of its proper divisors (180202940).

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

135905860 is a wasteful number, since it uses less digits than its factorization.

135905860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 135905860 is about 11657.8668717738. The cubic root of 135905860 is about 514.1376336599.

The spelling of 135905860 in words is "one hundred thirty-five million, nine hundred five thousand, eight hundred sixty".