122666280 has 256 divisors, whose sum is σ = 434764800. Its totient is φ = 27371520.

The previous prime is 122666273. The next prime is 122666309. The reversal of 122666280 is 82666221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1680324 + ... + 1680396.

It is an arithmetic number, because the mean of its divisors is an integer number (1698300).

Almost surely, 2^122666280 is an apocalyptic number.

122666280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122666280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217382400).

122666280 is an abundant number, since it is smaller than the sum of its proper divisors (312098520).

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

122666280 is a wasteful number, since it uses less digits than its factorization.

122666280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 122666280 is about 11075.4810279283. The cubic root of 122666280 is about 496.8688055080.

The spelling of 122666280 in words is "one hundred twenty-two million, six hundred sixty-six thousand, two hundred eighty".