28145617446 has 16 divisors (see below), whose sum is σ = 56297279808. Its totient is φ = 9380865000.

The previous prime is 28145617429. The next prime is 28145617459. The reversal of 28145617446 is 64471654182.

It is a junction number, because it is equal to n+sod(n) for n = 28145617395 and 28145617404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190180 + ... + 304071.

It is an arithmetic number, because the mean of its divisors is an integer number (3518579988).

Almost surely, 2^28145617446 is an apocalyptic number.

28145617446 is an abundant number, since it is smaller than the sum of its proper divisors (28151662362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28145617446 is a wasteful number, since it uses less digits than its factorization.

28145617446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503747.

The product of its digits is 1290240, while the sum is 48.

The spelling of 28145617446 in words is "twenty-eight billion, one hundred forty-five million, six hundred seventeen thousand, four hundred forty-six".