7732121256 has 48 divisors (see below), whose sum is σ = 21148519860. Its totient is φ = 2551852800.

The previous prime is 7732121233. The next prime is 7732121261. The reversal of 7732121256 is 6521212377.

7732121256 is a `hidden beast` number, since 77 + 321 + 212 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7145997156 + 586124100 = 84534^2 + 24210^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7732121256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524365 + ... + 538908.

Almost surely, 2^7732121256 is an apocalyptic number.

It is an amenable number.

7732121256 is an abundant number, since it is smaller than the sum of its proper divisors (13416398604).

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

7732121256 is a wasteful number, since it uses less digits than its factorization.

7732121256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063386 (or 1063379 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 7732121256 is about 87932.4812341833. The cubic root of 7732121256 is about 1977.4228668777.

It can be divided in two parts, 7732121 and 256, that added together give a palindrome (7732377).

The spelling of 7732121256 in words is "seven billion, seven hundred thirty-two million, one hundred twenty-one thousand, two hundred fifty-six".