28572471405 has 24 divisors (see below), whose sum is σ = 50006456448. Its totient is φ = 15090700896.

The previous prime is 28572471391. The next prime is 28572471407. The reversal of 28572471405 is 50417427582.

28572471405 is a `hidden beast` number, since 2 + 8 + 572 + 4 + 71 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 28572471405 - 2²⁹ = 28035600493 is a prime.

It is a super-2 number, since 2×28572471405² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572471407) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3077617 + ... + 3086886.

It is an arithmetic number, because the mean of its divisors is an integer number (2083602352).

Almost surely, 2^28572471405 is an apocalyptic number.

It is an amenable number.

28572471405 is a deficient number, since it is larger than the sum of its proper divisors (21433985043).

28572471405 is a wasteful number, since it uses less digits than its factorization.

28572471405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164617 (or 6164614 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

Adding to 28572471405 its reverse (50417427582), we get a palindrome (78989898987).

The spelling of 28572471405 in words is "twenty-eight billion, five hundred seventy-two million, four hundred seventy-one thousand, four hundred five".