28949070028356 has 135 divisors (see below), whose sum is σ = 76027802778543. Its totient is φ = 9605365994160.

The previous prime is 28949070028309. The next prime is 28949070028409. The reversal of 28949070028356 is 65382007094982.

The square root of 28949070028356 is 5380434.

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

28949070028356 is a `hidden beast` number, since 2 + 8 + 9 + 490 + 70 + 0 + 28 + 3 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28949070028293 and 28949070028302.

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 44 ways as a sum of consecutive naturals, for example, 26245756501 + ... + 26245757603.

Almost surely, 2^{28949070028356} is an apocalyptic number.

28949070028356 is the 5380434-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28949070028356

28949070028356 is an abundant number, since it is smaller than the sum of its proper divisors (47078732750187).

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

28949070028356 is an frugal number, since it uses more digits than its factorization.

28949070028356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 28949070028356 in words is "twenty-eight trillion, nine hundred forty-nine billion, seventy million, twenty-eight thousand, three hundred fifty-six".