1328763836 has 24 divisors (see below), whose sum is σ = 2349605664. Its totient is φ = 657466880.

The previous prime is 1328763833. The next prime is 1328763851. The reversal of 1328763836 is 6383678231.

It is a super-2 number, since 2×1328763836² = 3531226663722869792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328763833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342041 + ... + 345903.

It is an arithmetic number, because the mean of its divisors is an integer number (97900236).

Almost surely, 2^1328763836 is an apocalyptic number.

It is an amenable number.

1328763836 is a deficient number, since it is larger than the sum of its proper divisors (1020841828).

1328763836 is a wasteful number, since it uses less digits than its factorization.

1328763836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741 (or 4739 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 1328763836 is about 36452.2130466725. The cubic root of 1328763836 is about 1099.3836315512.

The spelling of 1328763836 in words is "one billion, three hundred twenty-eight million, seven hundred sixty-three thousand, eight hundred thirty-six".