122636536 has 64 divisors (see below), whose sum is σ = 259200000. Its totient is φ = 53919360.

The previous prime is 122636533. The next prime is 122636543. The reversal of 122636536 is 635636221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122636531) 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, 616165 + ... + 616363.

It is an arithmetic number, because the mean of its divisors is an integer number (4050000).

Almost surely, 2^122636536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122636536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129600000).

122636536 is an abundant number, since it is smaller than the sum of its proper divisors (136563464).

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

122636536 is a wasteful number, since it uses less digits than its factorization.

122636536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 408 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 122636536 is about 11074.1381605974. The cubic root of 122636536 is about 496.8286421737.

The spelling of 122636536 in words is "one hundred twenty-two million, six hundred thirty-six thousand, five hundred thirty-six".