1232486640 has 720 divisors, whose sum is σ = 5433652224. Its totient is φ = 244823040.

The previous prime is 1232486543. The next prime is 1232486681. The reversal of 1232486640 is 466842321.

1232486640 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 8 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a junction number, because it is equal to n+sod(n) for n = 1232486595 and 1232486604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 26223097 + ... + 26223143.

Almost surely, 2^1232486640 is an apocalyptic number.

1232486640 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 1232486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2716826112).

1232486640 is an abundant number, since it is smaller than the sum of its proper divisors (4201165584).

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

1232486640 is a wasteful number, since it uses less digits than its factorization.

1232486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1232486640 is about 35106.7890870128. The cubic root of 1232486640 is about 1072.1628131340.

The spelling of 1232486640 in words is "one billion, two hundred thirty-two million, four hundred eighty-six thousand, six hundred forty".