1320206624 has 96 divisors (see below), whose sum is σ = 2978519040. Its totient is φ = 570169600.

The previous prime is 1320206617. The next prime is 1320206633. The reversal of 1320206624 is 4266020231.

It is a junction number, because it is equal to n+sod(n) for n = 1320206593 and 1320206602.

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 15 ways as a sum of consecutive naturals, for example, 1448729 + ... + 1449639.

It is an arithmetic number, because the mean of its divisors is an integer number (31026240).

Almost surely, 2^1320206624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320206624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489259520).

1320206624 is an abundant number, since it is smaller than the sum of its proper divisors (1658312416).

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

1320206624 is a wasteful number, since it uses less digits than its factorization.

1320206624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1320206624 is about 36334.6477071128. The cubic root of 1320206624 is about 1097.0185445038.

Adding to 1320206624 its reverse (4266020231), we get a palindrome (5586226855).

The spelling of 1320206624 in words is "one billion, three hundred twenty million, two hundred six thousand, six hundred twenty-four".