1236080000 has 80 divisors (see below), whose sum is σ = 3077343060. Its totient is φ = 494400000.

The previous prime is 1236079991. The next prime is 1236080039. The reversal of 1236080000 is 806321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72275 + ... + 87725.

Almost surely, 2^1236080000 is an apocalyptic number.

1236080000 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 1236080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538671530).

1236080000 is an abundant number, since it is smaller than the sum of its proper divisors (1841263060).

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

1236080000 is an frugal number, since it uses more digits than its factorization.

1236080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15485 (or 15458 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1236080000 is about 35157.9294043321. The cubic root of 1236080000 is about 1073.2037787982.

Adding to 1236080000 its reverse (806321), we get a palindrome (1236886321).

The spelling of 1236080000 in words is "one billion, two hundred thirty-six million, eighty thousand".