1315604420 has 96 divisors (see below), whose sum is σ = 3052425600. Its totient is φ = 473324544.

The previous prime is 1315604413. The next prime is 1315604447. The reversal of 1315604420 is 244065131.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1315604420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2131952 + ... + 2132568.

It is an arithmetic number, because the mean of its divisors is an integer number (31796100).

Almost surely, 2^1315604420 is an apocalyptic number.

1315604420 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 1315604420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526212800).

1315604420 is an abundant number, since it is smaller than the sum of its proper divisors (1736821180).

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

1315604420 is a wasteful number, since it uses less digits than its factorization.

1315604420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1315604420 is about 36271.2616268031. The cubic root of 1315604420 is about 1095.7423349124.

Adding to 1315604420 its reverse (244065131), we get a palindrome (1559669551).

The spelling of 1315604420 in words is "one billion, three hundred fifteen million, six hundred four thousand, four hundred twenty".