136007840 has 24 divisors (see below), whose sum is σ = 321318900. Its totient is φ = 54403072.

The previous prime is 136007797. The next prime is 136007843. The reversal of 136007840 is 48700631.

It can be written as a sum of positive squares in 2 ways, for example, as 135582736 + 425104 = 11644^2 + 652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136007843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424865 + ... + 425184.

Almost surely, 2^136007840 is an apocalyptic number.

136007840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136007840 is an abundant number, since it is smaller than the sum of its proper divisors (185311060).

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

136007840 is an equidigital number, since it uses as much as digits as its factorization.

136007840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850064 (or 850056 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 136007840 is about 11662.2399220733. The cubic root of 136007840 is about 514.2661997298.

The spelling of 136007840 in words is "one hundred thirty-six million, seven thousand, eight hundred forty".