28228092904 has 64 divisors (see below), whose sum is σ = 58296772800. Its totient is φ = 12813261120.

The previous prime is 28228092869. The next prime is 28228092917. The reversal of 28228092904 is 40929082282.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10614727 + ... + 10617385.

It is an arithmetic number, because the mean of its divisors is an integer number (910887075).

Almost surely, 2^28228092904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28228092904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29148386400).

28228092904 is an abundant number, since it is smaller than the sum of its proper divisors (30068679896).

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

28228092904 is a wasteful number, since it uses less digits than its factorization.

28228092904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 28228092904 in words is "twenty-eight billion, two hundred twenty-eight million, ninety-two thousand, nine hundred four".