123322788 has 36 divisors (see below), whose sum is σ = 313333020. Its totient is φ = 40896576.

The previous prime is 123322747. The next prime is 123322807. The reversal of 123322788 is 887223321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105021504 + 18301284 = 10248^2 + 4278^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603 + ... + 15786.

It is an arithmetic number, because the mean of its divisors is an integer number (8703695).

Almost surely, 2^123322788 is an apocalyptic number.

123322788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123322788 is an abundant number, since it is smaller than the sum of its proper divisors (190010232).

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

123322788 is a wasteful number, since it uses less digits than its factorization.

123322788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17596 (or 17591 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 123322788 is about 11105.0793783746. The cubic root of 123322788 is about 497.7536401824.

The spelling of 123322788 in words is "one hundred twenty-three million, three hundred twenty-two thousand, seven hundred eighty-eight".