1230819520 has 112 divisors (see below), whose sum is σ = 3371136768. Its totient is φ = 419281920.

The previous prime is 1230819461. The next prime is 1230819521. The reversal of 1230819520 is 259180321.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (1230819521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363435 + ... + 366805.

Almost surely, 2^1230819520 is an apocalyptic number.

1230819520 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 1230819520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685568384).

1230819520 is an abundant number, since it is smaller than the sum of its proper divisors (2140317248).

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

1230819520 is a wasteful number, since it uses less digits than its factorization.

1230819520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1230819520 is about 35083.0374967733. The cubic root of 1230819520 is about 1071.6791755470.

Adding to 1230819520 its reverse (259180321), we get a palindrome (1489999841).

The spelling of 1230819520 in words is "one billion, two hundred thirty million, eight hundred nineteen thousand, five hundred twenty".