135520488 has 24 divisors (see below), whose sum is σ = 367034850. Its totient is φ = 45173472.

The previous prime is 135520459. The next prime is 135520507. The reversal of 135520488 is 884025531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74960964 + 60559524 = 8658^2 + 7782^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 5 ways as a sum of consecutive naturals, for example, 941043 + ... + 941186.

Almost surely, 2^135520488 is an apocalyptic number.

135520488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135520488 is an abundant number, since it is smaller than the sum of its proper divisors (231514362).

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

135520488 is a wasteful number, since it uses less digits than its factorization.

135520488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882241 (or 1882234 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 135520488 is about 11641.3267285134. The cubic root of 135520488 is about 513.6512140679.

The spelling of 135520488 in words is "one hundred thirty-five million, five hundred twenty thousand, four hundred eighty-eight".