28572249824447 has 16 divisors (see below), whose sum is σ = 32821593388032. Its totient is φ = 24364895476320.

The previous prime is 28572249824429. The next prime is 28572249824467. The reversal of 28572249824447 is 74442894227582.

It is not a de Polignac number, because 28572249824447 - 2¹² = 28572249820351 is a prime.

It is a super-2 number, since 2×28572249824447² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572249824467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6023 + ... + 7559400.

It is an arithmetic number, because the mean of its divisors is an integer number (2051349586752).

Almost surely, 2^{28572249824447} is an apocalyptic number.

28572249824447 is a deficient number, since it is larger than the sum of its proper divisors (4249343563585).

28572249824447 is a wasteful number, since it uses less digits than its factorization.

28572249824447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568198.

The product of its digits is 578027520, while the sum is 68.

The spelling of 28572249824447 in words is "twenty-eight trillion, five hundred seventy-two billion, two hundred forty-nine million, eight hundred twenty-four thousand, four hundred forty-seven".