135520000 has 270 divisors, whose sum is σ = 424632824. Its totient is φ = 42240000.

The previous prime is 135519947. The next prime is 135520001. The reversal of 135520000 is 25531.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135520001) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 12319995 + ... + 12320005.

Almost surely, 2^135520000 is an apocalyptic number.

135520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212316412).

135520000 is an abundant number, since it is smaller than the sum of its proper divisors (289112824).

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

135520000 is an frugal number, since it uses more digits than its factorization.

135520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 135520000 is about 11641.3057686842. The cubic root of 135520000 is about 513.6505975262.

Adding to 135520000 its reverse (25531), we get a palindrome (135545531).

The spelling of 135520000 in words is "one hundred thirty-five million, five hundred twenty thousand".