122288840 has 32 divisors (see below), whose sum is σ = 278640000. Its totient is φ = 48295104.

The previous prime is 122288833. The next prime is 122288843. The reversal of 122288840 is 48882221.

It is a super-3 number, since 3×122288840³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122288840.

It is not an unprimeable number, because it can be changed into a prime (122288843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16190 + ... + 22509.

It is an arithmetic number, because the mean of its divisors is an integer number (8707500).

Almost surely, 2^122288840 is an apocalyptic number.

122288840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122288840 is an abundant number, since it is smaller than the sum of its proper divisors (156351160).

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

122288840 is a wasteful number, since it uses less digits than its factorization.

122288840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38789 (or 38785 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 122288840 is about 11058.4284597767. The cubic root of 122288840 is about 496.3586657452.

The spelling of 122288840 in words is "one hundred twenty-two million, two hundred eighty-eight thousand, eight hundred forty".