135206490 has 32 divisors (see below), whose sum is σ = 324918720. Its totient is φ = 36008064.

The previous prime is 135206453. The next prime is 135206501. The reversal of 135206490 is 94602531.

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

It is a Curzon 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, 24726 + ... + 29694.

It is an arithmetic number, because the mean of its divisors is an integer number (10153710).

Almost surely, 2^135206490 is an apocalyptic number.

135206490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135206490 is an abundant number, since it is smaller than the sum of its proper divisors (189712230).

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

135206490 is a wasteful number, since it uses less digits than its factorization.

135206490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 135206490 is about 11627.8325581340. The cubic root of 135206490 is about 513.2542010852.

The spelling of 135206490 in words is "one hundred thirty-five million, two hundred six thousand, four hundred ninety".