28151470656 has 63 divisors (see below), whose sum is σ = 80702651523. Its totient is φ = 9382481280.

The previous prime is 28151470649. The next prime is 28151470661. The reversal of 28151470656 is 65607415182.

The square root of 28151470656 is 167784.

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

28151470656 is a `hidden beast` number, since 2 + 8 + 1 + 514 + 70 + 65 + 6 = 666.

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 8 ways as a sum of consecutive naturals, for example, 4023321 + ... + 4030311.

Almost surely, 2^28151470656 is an apocalyptic number.

28151470656 is the 167784-th square number.

It is an amenable number.

28151470656 is an abundant number, since it is smaller than the sum of its proper divisors (52551180867).

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

28151470656 is an frugal number, since it uses more digits than its factorization.

28151470656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000 (or 6996 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 28151470656 in words is "twenty-eight billion, one hundred fifty-one million, four hundred seventy thousand, six hundred fifty-six".