87732428730256 has 20 divisors (see below), whose sum is σ = 169981760764300. Its totient is φ = 43866167887872.

The previous prime is 87732428730227. The next prime is 87732428730257. The reversal of 87732428730256 is 65203782423778.

It can be written as a sum of positive squares in 2 ways, for example, as 33574839584400 + 54157589145856 = 5794380^2 + 7359184^2 .

It is not an unprimeable number, because it can be changed into a prime (87732428730257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16662340 + ... + 21286108.

It is an arithmetic number, because the mean of its divisors is an integer number (8499088038215).

Almost surely, 2^{87732428730256} is an apocalyptic number.

It is an amenable number.

87732428730256 is a deficient number, since it is larger than the sum of its proper divisors (82249332034044).

87732428730256 is a wasteful number, since it uses less digits than its factorization.

87732428730256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809666 (or 5809660 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 64.

The spelling of 87732428730256 in words is "eighty-seven trillion, seven hundred thirty-two billion, four hundred twenty-eight million, seven hundred thirty thousand, two hundred fifty-six".