122884290 has 80 divisors (see below), whose sum is σ = 332449920. Its totient is φ = 32568480.

The previous prime is 122884277. The next prime is 122884309. The reversal of 122884290 is 92488221.

122884290 is a `hidden beast` number, since 1 + 228 + 8 + 429 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 170551 + ... + 171269.

It is an arithmetic number, because the mean of its divisors is an integer number (4155624).

Almost surely, 2^122884290 is an apocalyptic number.

122884290 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 122884290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166224960).

122884290 is an abundant number, since it is smaller than the sum of its proper divisors (209565630).

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

122884290 is a wasteful number, since it uses less digits than its factorization.

122884290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 122884290 is about 11085.3186693031. The cubic root of 122884290 is about 497.1629864875.

The spelling of 122884290 in words is "one hundred twenty-two million, eight hundred eighty-four thousand, two hundred ninety".