1156628235728 has 30 divisors (see below), whose sum is σ = 2606839405506. Its totient is φ = 495697814976.

The previous prime is 1156628235671. The next prime is 1156628235739. The reversal of 1156628235728 is 8275328266511.

It can be written as a sum of positive squares in only one way, i.e., 611411397184 + 545216838544 = 781928^2 + 738388^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737644775 + ... + 737646342.

Almost surely, 2^{1156628235728} is an apocalyptic number.

It is an amenable number.

1156628235728 is an abundant number, since it is smaller than the sum of its proper divisors (1450211169778).

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

1156628235728 is a wasteful number, since it uses less digits than its factorization.

1156628235728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475291139 (or 1475291126 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 56.

The spelling of 1156628235728 in words is "one trillion, one hundred fifty-six billion, six hundred twenty-eight million, two hundred thirty-five thousand, seven hundred twenty-eight".