1229980752 has 720 divisors, whose sum is σ = 5001429888. Its totient is φ = 276756480.

The previous prime is 1229980733. The next prime is 1229980793. The reversal of 1229980752 is 2570899221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1229980698 and 1229980707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23207158 + ... + 23207210.

Almost surely, 2^1229980752 is an apocalyptic number.

1229980752 is a gapful number since it is divisible by the number (12) 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 1229980752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2500714944).

1229980752 is an abundant number, since it is smaller than the sum of its proper divisors (3771449136).

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

1229980752 is a wasteful number, since it uses less digits than its factorization.

1229980752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1229980752 is about 35071.0814204524. The cubic root of 1229980752 is about 1071.4356807452.

The spelling of 1229980752 in words is "one billion, two hundred twenty-nine million, nine hundred eighty thousand, seven hundred fifty-two".