122778282 has 16 divisors (see below), whose sum is σ = 267880032. Its totient is φ = 37205520.

The previous prime is 122778281. The next prime is 122778289. The reversal of 122778282 is 282877221.

It is a self number, because there is not a number n which added to its sum of digits gives 122778282.

It is not an unprimeable number, because it can be changed into a prime (122778281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930073 + ... + 930204.

It is an arithmetic number, because the mean of its divisors is an integer number (16742502).

Almost surely, 2^122778282 is an apocalyptic number.

122778282 is an abundant number, since it is smaller than the sum of its proper divisors (145101750).

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

122778282 is a wasteful number, since it uses less digits than its factorization.

122778282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860293.

The product of its digits is 50176, while the sum is 39.

The square root of 122778282 is about 11080.5361783625. The cubic root of 122778282 is about 497.0199836235.

The spelling of 122778282 in words is "one hundred twenty-two million, seven hundred seventy-eight thousand, two hundred eighty-two".