136722020 has 12 divisors (see below), whose sum is σ = 287116284. Its totient is φ = 54688800.

The previous prime is 136722017. The next prime is 136722023. The reversal of 136722020 is 20227631.

It is an interprime number because it is at equal distance from previous prime (136722017) and next prime (136722023).

It can be written as a sum of positive squares in 2 ways, for example, as 60124516 + 76597504 = 7754^2 + 8752^2 .

It is not an unprimeable number, because it can be changed into a prime (136722023) 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 3 ways as a sum of consecutive naturals, for example, 3418031 + ... + 3418070.

It is an arithmetic number, because the mean of its divisors is an integer number (23926357).

Almost surely, 2^136722020 is an apocalyptic number.

136722020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136722020 is an abundant number, since it is smaller than the sum of its proper divisors (150394264).

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

136722020 is a wasteful number, since it uses less digits than its factorization.

136722020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836110 (or 6836108 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 136722020 is about 11692.8191639142. The cubic root of 136722020 is about 515.1647695985.

Adding to 136722020 its reverse (20227631), we get a palindrome (156949651).

The spelling of 136722020 in words is "one hundred thirty-six million, seven hundred twenty-two thousand, twenty".