1236960257428 has 96 divisors (see below), whose sum is σ = 2749774970880. Its totient is φ = 474662868480.

The previous prime is 1236960257419. The next prime is 1236960257441. The reversal of 1236960257428 is 8247520696321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 160201 + ... + 1581007.

It is an arithmetic number, because the mean of its divisors is an integer number (28643489280).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1236960257428 = 2473920514856, but 3⋅1236960257428 = 3710880772284 is not.

Almost surely, 2^{1236960257428} 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 1236960257428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374887485440).

1236960257428 is an abundant number, since it is smaller than the sum of its proper divisors (1512814713452).

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

1236960257428 is a wasteful number, since it uses less digits than its factorization.

1236960257428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420925 (or 1420923 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 1236960257428 in words is "one trillion, two hundred thirty-six billion, nine hundred sixty million, two hundred fifty-seven thousand, four hundred twenty-eight".