1310720828 has 12 divisors (see below), whose sum is σ = 2299238760. Its totient is φ = 653795472.

The previous prime is 1310720809. The next prime is 1310720839. The reversal of 1310720828 is 8280270131.

It is a junction number, because it is equal to n+sod(n) for n = 1310720794 and 1310720803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389351 + ... + 392702.

It is an arithmetic number, because the mean of its divisors is an integer number (191603230).

Almost surely, 2^1310720828 is an apocalyptic number.

It is an amenable number.

1310720828 is a deficient number, since it is larger than the sum of its proper divisors (988517932).

1310720828 is a wasteful number, since it uses less digits than its factorization.

1310720828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782476 (or 782474 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1310720828 is about 36203.8786319919. The cubic root of 1310720828 is about 1094.3848363190.

Adding to 1310720828 its reverse (8280270131), we get a palindrome (9590990959).

The spelling of 1310720828 in words is "one billion, three hundred ten million, seven hundred twenty thousand, eight hundred twenty-eight".