28892216445 has 8 divisors (see below), whose sum is σ = 46227546336. Its totient is φ = 15409182096.

The previous prime is 28892216417. The next prime is 28892216447. The reversal of 28892216445 is 54461229882.

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

It is not a de Polignac number, because 28892216445 - 2⁵ = 28892216413 is a prime.

It is a super-2 number, since 2×28892216445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28892216447) 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, 963073867 + ... + 963073896.

It is an arithmetic number, because the mean of its divisors is an integer number (5778443292).

Almost surely, 2^28892216445 is an apocalyptic number.

It is an amenable number.

28892216445 is a deficient number, since it is larger than the sum of its proper divisors (17335329891).

28892216445 is a wasteful number, since it uses less digits than its factorization.

28892216445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926147771.

The product of its digits is 2211840, while the sum is 51.

The spelling of 28892216445 in words is "twenty-eight billion, eight hundred ninety-two million, two hundred sixteen thousand, four hundred forty-five".