28870611967044 has 81 divisors (see below), whose sum is σ = 74026703503389. Its totient is φ = 9487242303840.

The previous prime is 28870611966997. The next prime is 28870611967061. The reversal of 28870611967044 is 44076911607882.

The square root of 28870611967044 is 5373138.

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

28870611967044 is a `hidden beast` number, since 2 + 8 + 8 + 7 + 0 + 611 + 9 + 6 + 7 + 0 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12187569744900 + 16683042222144 = 3491070^2 + 4084488^2 .

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 26 ways as a sum of consecutive naturals, for example, 2288950482 + ... + 2288963094.

Almost surely, 2^{28870611967044} is an apocalyptic number.

28870611967044 is the 5373138-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28870611967044

28870611967044 is an abundant number, since it is smaller than the sum of its proper divisors (45156091536345).

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

28870611967044 is an frugal number, since it uses more digits than its factorization.

28870611967044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25378 (or 12689 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 28870611967044 in words is "twenty-eight trillion, eight hundred seventy billion, six hundred eleven million, nine hundred sixty-seven thousand, forty-four".