28551870471 has 8 divisors (see below), whose sum is σ = 38108129904. Its totient is φ = 19015095680.

The previous prime is 28551870443. The next prime is 28551870493. The reversal of 28551870471 is 17407815582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28551870471 - 2⁹ = 28551869959 is a prime.

It is a super-3 number, since 3×28551870471³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28551870471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28551870421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4867740 + ... + 4873601.

It is an arithmetic number, because the mean of its divisors is an integer number (4763516238).

Almost surely, 2^28551870471 is an apocalyptic number.

28551870471 is a deficient number, since it is larger than the sum of its proper divisors (9556259433).

28551870471 is an equidigital number, since it uses as much as digits as its factorization.

28551870471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9742321.

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 28551870471 in words is "twenty-eight billion, five hundred fifty-one million, eight hundred seventy thousand, four hundred seventy-one".