122644650 has 48 divisors (see below), whose sum is σ = 309917664. Its totient is φ = 32086080.

The previous prime is 122644631. The next prime is 122644661. The reversal of 122644650 is 56446221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237 + ... + 15663.

It is an arithmetic number, because the mean of its divisors is an integer number (6456618).

Almost surely, 2^122644650 is an apocalyptic number.

122644650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122644650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154958832).

122644650 is an abundant number, since it is smaller than the sum of its proper divisors (187273014).

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

122644650 is a wasteful number, since it uses less digits than its factorization.

122644650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15495 (or 15490 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 122644650 is about 11074.5045035884. The cubic root of 122644650 is about 496.8395991550.

The spelling of 122644650 in words is "one hundred twenty-two million, six hundred forty-four thousand, six hundred fifty".