135266520 has 32 divisors (see below), whose sum is σ = 405799920. Its totient is φ = 36071040.

The previous prime is 135266513. The next prime is 135266543. The reversal of 135266520 is 25662531.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 563491 + ... + 563730.

Almost surely, 2^135266520 is an apocalyptic number.

135266520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135266520 is an abundant number, since it is smaller than the sum of its proper divisors (270533400).

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

135266520 is a wasteful number, since it uses less digits than its factorization.

135266520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127235 (or 1127231 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 135266520 is about 11630.4135782009. The cubic root of 135266520 is about 513.3301493403.

The spelling of 135266520 in words is "one hundred thirty-five million, two hundred sixty-six thousand, five hundred twenty".