122720888 has 8 divisors (see below), whose sum is σ = 230101680. Its totient is φ = 61360440.

The previous prime is 122720887. The next prime is 122720903. The reversal of 122720888 is 888027221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122720881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670048 + ... + 7670063.

It is an arithmetic number, because the mean of its divisors is an integer number (28762710).

Almost surely, 2^122720888 is an apocalyptic number.

It is an amenable number.

122720888 is a deficient number, since it is larger than the sum of its proper divisors (107380792).

122720888 is a wasteful number, since it uses less digits than its factorization.

122720888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340117 (or 15340113 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 122720888 is about 11077.9460190055. The cubic root of 122720888 is about 496.9425258121.

The spelling of 122720888 in words is "one hundred twenty-two million, seven hundred twenty thousand, eight hundred eighty-eight".