28216523654 has 16 divisors (see below), whose sum is σ = 47298653136. Its totient is φ = 12512870400.

The previous prime is 28216523627. The next prime is 28216523663. The reversal of 28216523654 is 45632561282.

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, 15640187 + ... + 15641990.

It is an arithmetic number, because the mean of its divisors is an integer number (2956165821).

Almost surely, 2^28216523654 is an apocalyptic number.

28216523654 is a deficient number, since it is larger than the sum of its proper divisors (19082129482).

28216523654 is a wasteful number, since it uses less digits than its factorization.

28216523654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31282231.

The product of its digits is 691200, while the sum is 44.

The spelling of 28216523654 in words is "twenty-eight billion, two hundred sixteen million, five hundred twenty-three thousand, six hundred fifty-four".