136149520 has 160 divisors (see below), whose sum is σ = 363976704. Its totient is φ = 47001600.

The previous prime is 136149511. The next prime is 136149539. The reversal of 136149520 is 25941631.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 31 ways as a sum of consecutive naturals, for example, 1321789 + ... + 1321891.

Almost surely, 2^136149520 is an apocalyptic number.

136149520 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 136149520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181988352).

136149520 is an abundant number, since it is smaller than the sum of its proper divisors (227827184).

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

136149520 is a wasteful number, since it uses less digits than its factorization.

136149520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 136149520 is about 11668.3126457942. The cubic root of 136149520 is about 514.4447089242. Note that the first 3 decimals are identical.

The spelling of 136149520 in words is "one hundred thirty-six million, one hundred forty-nine thousand, five hundred twenty".