122779080 has 96 divisors (see below), whose sum is σ = 400982400. Its totient is φ = 32581248.

The previous prime is 122779067. The next prime is 122779091. The reversal of 122779080 is 80977221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85327 + ... + 86753.

It is an arithmetic number, because the mean of its divisors is an integer number (4176900).

Almost surely, 2^122779080 is an apocalyptic number.

122779080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122779080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200491200).

122779080 is an abundant number, since it is smaller than the sum of its proper divisors (278203320).

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

122779080 is a wasteful number, since it uses less digits than its factorization.

122779080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 122779080 is about 11080.5721873918. The cubic root of 122779080 is about 497.0210604184.

The spelling of 122779080 in words is "one hundred twenty-two million, seven hundred seventy-nine thousand, eighty".