122198628 has 12 divisors (see below), whose sum is σ = 285130160. Its totient is φ = 40732872.

The previous prime is 122198623. The next prime is 122198639. The reversal of 122198628 is 826891221.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (122198623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5091598 + ... + 5091621.

Almost surely, 2^122198628 is an apocalyptic number.

It is an amenable number.

122198628 is an abundant number, since it is smaller than the sum of its proper divisors (162931532).

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

122198628 is a wasteful number, since it uses less digits than its factorization.

122198628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10183226 (or 10183224 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 122198628 is about 11054.3488274977. The cubic root of 122198628 is about 496.2365817698.

The spelling of 122198628 in words is "one hundred twenty-two million, one hundred ninety-eight thousand, six hundred twenty-eight".