28386480 has 40 divisors (see below), whose sum is σ = 87998832. Its totient is φ = 7569664.

The previous prime is 28386469. The next prime is 28386487. The reversal of 28386480 is 8468382.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (28386487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58899 + ... + 59378.

Almost surely, 2^28386480 is an apocalyptic number.

28386480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28386480 is an abundant number, since it is smaller than the sum of its proper divisors (59612352).

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

28386480 is a wasteful number, since it uses less digits than its factorization.

28386480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118293 (or 118287 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 28386480 is about 5327.8963953891. The cubic root of 28386480 is about 305.0496380735.

The spelling of 28386480 in words is "twenty-eight million, three hundred eighty-six thousand, four hundred eighty".