1029888047556 has 81 divisors (see below), whose sum is σ = 2637930875853. Its totient is φ = 338792182560.

The previous prime is 1029888047533. The next prime is 1029888047567. The reversal of 1029888047556 is 6557408889201.

The square root of 1029888047556 is 1014834.

It is a perfect power (a square), and thus also a powerful number.

1029888047556 is a `hidden beast` number, since 1 + 0 + 2 + 9 + 88 + 80 + 475 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 982346605956 + 47541441600 = 991134^2 + 218040^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1029888047493 and 1029888047502.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 481030246 + ... + 481032386.

Almost surely, 2^{1029888047556} is an apocalyptic number.

1029888047556 is the 1014834-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1029888047556

1029888047556 is an abundant number, since it is smaller than the sum of its proper divisors (1608042828297).

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

1029888047556 is an frugal number, since it uses more digits than its factorization.

1029888047556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 1029888047556 in words is "one trillion, twenty-nine billion, eight hundred eighty-eight million, forty-seven thousand, five hundred fifty-six".