1232990280 has 384 divisors, whose sum is σ = 4491002880. Its totient is φ = 291962880.

The previous prime is 1232990267. The next prime is 1232990287. The reversal of 1232990280 is 820992321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1232990287) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12711192 + ... + 12711288.

It is an arithmetic number, because the mean of its divisors is an integer number (11695320).

Almost surely, 2^1232990280 is an apocalyptic number.

1232990280 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 1232990280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245501440).

1232990280 is an abundant number, since it is smaller than the sum of its proper divisors (3258012600).

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

1232990280 is a wasteful number, since it uses less digits than its factorization.

1232990280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1232990280 is about 35113.9613259456. The cubic root of 1232990280 is about 1072.3088351477.

The spelling of 1232990280 in words is "one billion, two hundred thirty-two million, nine hundred ninety thousand, two hundred eighty".