1235320000 has 140 divisors (see below), whose sum is σ = 3106536840. Its totient is φ = 487168000.

The previous prime is 1235319971. The next prime is 1235320001. The reversal of 1235320000 is 235321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1235320001) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 3559827 + ... + 3560173.

Almost surely, 2^1235320000 is an apocalyptic number.

1235320000 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 1235320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553268420).

1235320000 is an abundant number, since it is smaller than the sum of its proper divisors (1871216840).

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

1235320000 is an frugal number, since it uses more digits than its factorization.

1235320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1235320000 is about 35147.1193698716. The cubic root of 1235320000 is about 1072.9837816857.

Adding to 1235320000 its reverse (235321), we get a palindrome (1235555321).

The spelling of 1235320000 in words is "one billion, two hundred thirty-five million, three hundred twenty thousand".