122910780 has 48 divisors (see below), whose sum is σ = 348032160. Its totient is φ = 32406528.

The previous prime is 122910773. The next prime is 122910811. The reversal of 122910780 is 87019221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6169 + ... + 16848.

It is an arithmetic number, because the mean of its divisors is an integer number (7250670).

Almost surely, 2^122910780 is an apocalyptic number.

122910780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122910780 is an abundant number, since it is smaller than the sum of its proper divisors (225121380).

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

122910780 is a wasteful number, since it uses less digits than its factorization.

122910780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23118 (or 23116 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 122910780 is about 11086.5134284860. The cubic root of 122910780 is about 497.1987081714.

The spelling of 122910780 in words is "one hundred twenty-two million, nine hundred ten thousand, seven hundred eighty".