122717280 has 96 divisors (see below), whose sum is σ = 441794304. Its totient is φ = 28048896.

The previous prime is 122717279. The next prime is 122717291. The reversal of 122717280 is 82717221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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, 14902 + ... + 21621.

It is an arithmetic number, because the mean of its divisors is an integer number (4602024).

Almost surely, 2^122717280 is an apocalyptic number.

122717280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122717280 is an abundant number, since it is smaller than the sum of its proper divisors (319077024).

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

122717280 is a wasteful number, since it uses less digits than its factorization.

122717280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36548 (or 36540 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 122717280 is about 11077.7831717361. The cubic root of 122717280 is about 496.9376557197.

The spelling of 122717280 in words is "one hundred twenty-two million, seven hundred seventeen thousand, two hundred eighty".