136222320 has 80 divisors (see below), whose sum is σ = 454783392. Its totient is φ = 33530880.

The previous prime is 136222319. The next prime is 136222321. The reversal of 136222320 is 23222631.

It is an interprime number because it is at equal distance from previous prime (136222319) and next prime (136222321).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136222321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18711 + ... + 24950.

Almost surely, 2^136222320 is an apocalyptic number.

136222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136222320 is an abundant number, since it is smaller than the sum of its proper divisors (318561072).

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

136222320 is a wasteful number, since it uses less digits than its factorization.

136222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43690 (or 43684 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 136222320 is about 11671.4317887738. The cubic root of 136222320 is about 514.5363848542.

Adding to 136222320 its reverse (23222631), we get a palindrome (159444951).

The spelling of 136222320 in words is "one hundred thirty-six million, two hundred twenty-two thousand, three hundred twenty".