122987808 has 120 divisors (see below), whose sum is σ = 377612928. Its totient is φ = 39194496.

The previous prime is 122987807. The next prime is 122987827. The reversal of 122987808 is 808789221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122987807) 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 19 ways as a sum of consecutive naturals, for example, 58585 + ... + 60647.

Almost surely, 2^122987808 is an apocalyptic number.

122987808 is a gapful number since it is divisible by the number (18) 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 122987808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188806464).

122987808 is an abundant number, since it is smaller than the sum of its proper divisors (254625120).

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

122987808 is a wasteful number, since it uses less digits than its factorization.

122987808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 122987808 is about 11089.9868349787. The cubic root of 122987808 is about 497.3025510412.

The spelling of 122987808 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, eight hundred eight".