135205490 has 32 divisors (see below), whose sum is σ = 281957760. Its totient is φ = 45719424.

The previous prime is 135205481. The next prime is 135205519. The reversal of 135205490 is 94502531.

It is a super-2 number, since 2×135205490² = 36561049052280200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8120 + ... + 18339.

It is an arithmetic number, because the mean of its divisors is an integer number (8811180).

Almost surely, 2^135205490 is an apocalyptic number.

135205490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135205490 is an abundant number, since it is smaller than the sum of its proper divisors (146752270).

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

135205490 is a wasteful number, since it uses less digits than its factorization.

135205490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26546.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 135205490 is about 11627.7895577792. The cubic root of 135205490 is about 513.2529357232.

The spelling of 135205490 in words is "one hundred thirty-five million, two hundred five thousand, four hundred ninety".