122989648 has 40 divisors (see below), whose sum is σ = 256697856. Its totient is φ = 56918400.

The previous prime is 122989621. The next prime is 122989673. The reversal of 122989648 is 846989221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6018 + ... + 16798.

Almost surely, 2^122989648 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 122989648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128348928).

122989648 is an abundant number, since it is smaller than the sum of its proper divisors (133708208).

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

122989648 is a wasteful number, since it uses less digits than its factorization.

122989648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10843 (or 10837 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 122989648 is about 11090.0697923863. The cubic root of 122989648 is about 497.3050310489.

The spelling of 122989648 in words is "one hundred twenty-two million, nine hundred eighty-nine thousand, six hundred forty-eight".