28455816 has 16 divisors (see below), whose sum is σ = 71139600. Its totient is φ = 9485264.

The previous prime is 28455743. The next prime is 28455839. The reversal of 28455816 is 61855482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592806 + ... + 592853.

It is an arithmetic number, because the mean of its divisors is an integer number (4446225).

Almost surely, 2^28455816 is an apocalyptic number.

It is an amenable number.

28455816 is an abundant number, since it is smaller than the sum of its proper divisors (42683784).

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

28455816 is a wasteful number, since it uses less digits than its factorization.

28455816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185668 (or 1185664 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 28455816 is about 5334.3993101379. The cubic root of 28455816 is about 305.2978046204.

The spelling of 28455816 in words is "twenty-eight million, four hundred fifty-five thousand, eight hundred sixteen".