28471584554 has 12 divisors (see below), whose sum is σ = 49680009954. Its totient is φ = 12202107624.

The previous prime is 28471584551. The next prime is 28471584593. The reversal of 28471584554 is 45548517482.

It can be written as a sum of positive squares in only one way, i.e., 23511622225 + 4959962329 = 153335^2 + 70427^2 .

It is a super-2 number, since 2×28471584554² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28471584496 and 28471584505.

It is not an unprimeable number, because it can be changed into a prime (28471584551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145263089 + ... + 145263284.

Almost surely, 2^28471584554 is an apocalyptic number.

28471584554 is a deficient number, since it is larger than the sum of its proper divisors (21208425400).

28471584554 is a wasteful number, since it uses less digits than its factorization.

28471584554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290526389 (or 290526382 counting only the distinct ones).

The product of its digits is 7168000, while the sum is 53.

The spelling of 28471584554 in words is "twenty-eight billion, four hundred seventy-one million, five hundred eighty-four thousand, five hundred fifty-four".