122648958 has 64 divisors (see below), whose sum is σ = 288368640. Its totient is φ = 38577600.

The previous prime is 122648947. The next prime is 122648959. The reversal of 122648958 is 859846221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122648959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67741 + ... + 69527.

It is an arithmetic number, because the mean of its divisors is an integer number (4505760).

Almost surely, 2^122648958 is an apocalyptic number.

122648958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122648958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144184320).

122648958 is an abundant number, since it is smaller than the sum of its proper divisors (165719682).

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

122648958 is a wasteful number, since it uses less digits than its factorization.

122648958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1864 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 122648958 is about 11074.6990026817. The cubic root of 122648958 is about 496.8454163946.

The spelling of 122648958 in words is "one hundred twenty-two million, six hundred forty-eight thousand, nine hundred fifty-eight".