28087480 has 32 divisors (see below), whose sum is σ = 64069200. Its totient is φ = 11079936.

The previous prime is 28087469. The next prime is 28087487. The reversal of 28087480 is 8478082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28087487) 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, 1890 + ... + 7729.

Almost surely, 2^28087480 is an apocalyptic number.

28087480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28087480 is an abundant number, since it is smaller than the sum of its proper divisors (35981720).

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

28087480 is a wasteful number, since it uses less digits than its factorization.

28087480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9703 (or 9699 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 28087480 is about 5299.7622588188. The cubic root of 28087480 is about 303.9748074691.

The spelling of 28087480 in words is "twenty-eight million, eighty-seven thousand, four hundred eighty".