28461808 has 20 divisors (see below), whose sum is σ = 58389120. Its totient is φ = 13393664.

The previous prime is 28461803. The next prime is 28461821. The reversal of 28461808 is 80816482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28461803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52048 + ... + 52591.

It is an arithmetic number, because the mean of its divisors is an integer number (2919456).

Almost surely, 2^28461808 is an apocalyptic number.

It is an amenable number.

28461808 is an abundant number, since it is smaller than the sum of its proper divisors (29927312).

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

28461808 is a wasteful number, since it uses less digits than its factorization.

28461808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104664 (or 104658 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28461808 is about 5334.9609183198. The cubic root of 28461808 is about 305.3192321797.

The spelling of 28461808 in words is "twenty-eight million, four hundred sixty-one thousand, eight hundred eight".