135320408 has 32 divisors (see below), whose sum is σ = 280337760. Its totient is φ = 60910080.

The previous prime is 135320401. The next prime is 135320417. The reversal of 135320408 is 804023531.

It is a super-2 number, since 2×135320408² = 36623225642572928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135320401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18503 + ... + 24758.

It is an arithmetic number, because the mean of its divisors is an integer number (8760555).

Almost surely, 2^135320408 is an apocalyptic number.

It is an amenable number.

135320408 is an abundant number, since it is smaller than the sum of its proper divisors (145017352).

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

135320408 is a wasteful number, since it uses less digits than its factorization.

135320408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43307 (or 43303 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 135320408 is about 11632.7300321120. The cubic root of 135320408 is about 513.3983077742.

Adding to 135320408 its reverse (804023531), we get a palindrome (939343939).

The spelling of 135320408 in words is "one hundred thirty-five million, three hundred twenty thousand, four hundred eight".