1328750634 has 16 divisors (see below), whose sum is σ = 2813825088. Its totient is φ = 416862912.

The previous prime is 1328750627. The next prime is 1328750639. The reversal of 1328750634 is 4360578231.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1328750592 and 1328750601.

It is not an unprimeable number, because it can be changed into a prime (1328750639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6513382 + ... + 6513585.

It is an arithmetic number, because the mean of its divisors is an integer number (175864068).

Almost surely, 2^1328750634 is an apocalyptic number.

1328750634 is an abundant number, since it is smaller than the sum of its proper divisors (1485074454).

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

1328750634 is a wasteful number, since it uses less digits than its factorization.

1328750634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026989.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 1328750634 is about 36452.0319598236. The cubic root of 1328750634 is about 1099.3799905454.

The spelling of 1328750634 in words is "one billion, three hundred twenty-eight million, seven hundred fifty thousand, six hundred thirty-four".