122445780 has 48 divisors (see below), whose sum is σ = 345569280. Its totient is φ = 32393088.

The previous prime is 122445779. The next prime is 122445797. The reversal of 122445780 is 87544221.

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, 415 + ... + 15654.

It is an arithmetic number, because the mean of its divisors is an integer number (7199360).

Almost surely, 2^122445780 is an apocalyptic number.

122445780 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 122445780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172784640).

122445780 is an abundant number, since it is smaller than the sum of its proper divisors (223123500).

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

122445780 is a wasteful number, since it uses less digits than its factorization.

122445780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16208 (or 16206 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 122445780 is about 11065.5221295698. The cubic root of 122445780 is about 496.5709097758.

The spelling of 122445780 in words is "one hundred twenty-two million, four hundred forty-five thousand, seven hundred eighty".