1245311328 has 24 divisors (see below), whose sum is σ = 3268942488. Its totient is φ = 415103744.

The previous prime is 1245311321. The next prime is 1245311351. The reversal of 1245311328 is 8231135421.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 1245311295 and 1245311304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245311321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6485901 + ... + 6486092.

It is an arithmetic number, because the mean of its divisors is an integer number (136205937).

Almost surely, 2^1245311328 is an apocalyptic number.

It is an amenable number.

1245311328 is an abundant number, since it is smaller than the sum of its proper divisors (2023631160).

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

1245311328 is a wasteful number, since it uses less digits than its factorization.

1245311328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972006 (or 12971998 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1245311328 is about 35288.9689279809. The cubic root of 1245311328 is about 1075.8687991565.

Adding to 1245311328 its reverse (8231135421), we get a palindrome (9476446749).

The spelling of 1245311328 in words is "one billion, two hundred forty-five million, three hundred eleven thousand, three hundred twenty-eight".