28889644295628 has 48 divisors (see below), whose sum is σ = 75401756220000. Its totient is φ = 9565251349824.

The previous prime is 28889644295593. The next prime is 28889644295651. The reversal of 28889644295628 is 82659244698882.

28889644295628 is a `hidden beast` number, since 2 + 8 + 8 + 8 + 9 + 6 + 4 + 42 + 9 + 562 + 8 = 666.

It is a super-2 number, since 2×28889644295628² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897623863 + ... + 897656046.

It is an arithmetic number, because the mean of its divisors is an integer number (1570869921250).

Almost surely, 2^{28889644295628} is an apocalyptic number.

It is an amenable number.

28889644295628 is an abundant number, since it is smaller than the sum of its proper divisors (46512111924372).

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

28889644295628 is a wasteful number, since it uses less digits than its factorization.

28889644295628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795280071 (or 1795280063 counting only the distinct ones).

The product of its digits is 7644119040, while the sum is 81.

The spelling of 28889644295628 in words is "twenty-eight trillion, eight hundred eighty-nine billion, six hundred forty-four million, two hundred ninety-five thousand, six hundred twenty-eight".