122889650 has 24 divisors (see below), whose sum is σ = 246158724. Its totient is φ = 45374400.

The previous prime is 122889623. The next prime is 122889671. The reversal of 122889650 is 56988221.

It can be written as a sum of positive squares in 6 ways, for example, as 9616201 + 113273449 = 3101^2 + 10643^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122889598 and 122889607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93881 + ... + 95180.

Almost surely, 2^122889650 is an apocalyptic number.

122889650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122889650 is an abundant number, since it is smaller than the sum of its proper divisors (123269074).

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

122889650 is a wasteful number, since it uses less digits than its factorization.

122889650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189086 (or 189081 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 122889650 is about 11085.5604278719. The cubic root of 122889650 is about 497.1702148453.

The spelling of 122889650 in words is "one hundred twenty-two million, eight hundred eighty-nine thousand, six hundred fifty".