122969280 has 224 divisors, whose sum is σ = 462320640. Its totient is φ = 27095040.

The previous prime is 122969239. The next prime is 122969317. The reversal of 122969280 is 82969221.

122969280 = 78² + 79² + ... + 717².

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194565 + ... + 195195.

Almost surely, 2^122969280 is an apocalyptic number.

122969280 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 122969280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231160320).

122969280 is an abundant number, since it is smaller than the sum of its proper divisors (339351360).

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

122969280 is a wasteful number, since it uses less digits than its factorization.

122969280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 122969280 is about 11089.1514553639. The cubic root of 122969280 is about 497.2775770633.

The spelling of 122969280 in words is "one hundred twenty-two million, nine hundred sixty-nine thousand, two hundred eighty".