122808090 has 16 divisors (see below), whose sum is σ = 294739488. Its totient is φ = 32748816.

The previous prime is 122808089. The next prime is 122808097. The reversal of 122808090 is 90808221.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4093603 = 122808090 / (1 + 2 + 2 + 8 + 0 + 8 + 0 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (122808097) 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, 2046772 + ... + 2046831.

It is an arithmetic number, because the mean of its divisors is an integer number (18421218).

Almost surely, 2^122808090 is an apocalyptic number.

122808090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122808090 is an abundant number, since it is smaller than the sum of its proper divisors (171931398).

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

122808090 is a wasteful number, since it uses less digits than its factorization.

122808090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093613.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 122808090 is about 11081.8811579984. The cubic root of 122808090 is about 497.0602023893.

The spelling of 122808090 in words is "one hundred twenty-two million, eight hundred eight thousand, ninety".