122787888 has 20 divisors (see below), whose sum is σ = 317202168. Its totient is φ = 40929280.

The previous prime is 122787887. The next prime is 122787901. The reversal of 122787888 is 888787221.

It is a self number, because there is not a number n which added to its sum of digits gives 122787888.

It is not an unprimeable number, because it can be changed into a prime (122787881) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1278993 + ... + 1279088.

Almost surely, 2^122787888 is an apocalyptic number.

It is an amenable number.

122787888 is an abundant number, since it is smaller than the sum of its proper divisors (194414280).

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

122787888 is a wasteful number, since it uses less digits than its factorization.

122787888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558092 (or 2558086 counting only the distinct ones).

The product of its digits is 802816, while the sum is 51.

The square root of 122787888 is about 11080.9696326630. The cubic root of 122787888 is about 497.0329453335.

It can be divided in two parts, 12 and 2787888, that multiplied together give a square (33454656 = 5784²).

The spelling of 122787888 in words is "one hundred twenty-two million, seven hundred eighty-seven thousand, eight hundred eighty-eight".