135515910 has 32 divisors (see below), whose sum is σ = 325812960. Its totient is φ = 36073728.

The previous prime is 135515893. The next prime is 135515921. The reversal of 135515910 is 19515531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14706 + ... + 22074.

It is an arithmetic number, because the mean of its divisors is an integer number (10181655).

Almost surely, 2^135515910 is an apocalyptic number.

135515910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135515910 is an abundant number, since it is smaller than the sum of its proper divisors (190297050).

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

135515910 is a wasteful number, since it uses less digits than its factorization.

135515910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992.

The product of its (nonzero) digits is 3375, while the sum is 30.

The square root of 135515910 is about 11641.1300997798. The cubic root of 135515910 is about 513.6454301411.

The spelling of 135515910 in words is "one hundred thirty-five million, five hundred fifteen thousand, nine hundred ten".