1232243280 has 160 divisors (see below), whose sum is σ = 4297403520. Its totient is φ = 328551552.

The previous prime is 1232243279. The next prime is 1232243291. The reversal of 1232243280 is 823422321.

1232243280 is a `hidden beast` number, since 12 + 322 + 4 + 328 + 0 = 666.

It is a super-2 number, since 2×1232243280² = 3036847002210316800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 171439 + ... + 178481.

It is an arithmetic number, because the mean of its divisors is an integer number (26858772).

Almost surely, 2^1232243280 is an apocalyptic number.

1232243280 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 1232243280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148701760).

1232243280 is an abundant number, since it is smaller than the sum of its proper divisors (3065160240).

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

1232243280 is an frugal number, since it uses more digits than its factorization.

1232243280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 1232243280 is about 35103.3229196326. The cubic root of 1232243280 is about 1072.0922407077.

The spelling of 1232243280 in words is "one billion, two hundred thirty-two million, two hundred forty-three thousand, two hundred eighty".