28177651044 has 81 divisors (see below), whose sum is σ = 72199684011. Its totient is φ = 9265982400.

The previous prime is 28177651027. The next prime is 28177651057. The reversal of 28177651044 is 44015677182.

The square root of 28177651044 is 167862.

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

28177651044 is a `hidden beast` number, since 28 + 1 + 7 + 76 + 510 + 44 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1449324900 + 26728326144 = 38070^2 + 163488^2 .

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 26 ways as a sum of consecutive naturals, for example, 101724234 + ... + 101724510.

Almost surely, 2^28177651044 is an apocalyptic number.

28177651044 is the 167862-nd square number.

It is an amenable number.

28177651044 is an abundant number, since it is smaller than the sum of its proper divisors (44022032967).

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

28177651044 is a wasteful number, since it uses less digits than its factorization.

28177651044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 28177651044 in words is "twenty-eight billion, one hundred seventy-seven million, six hundred fifty-one thousand, forty-four".