28087260 has 24 divisors (see below), whose sum is σ = 78644496. Its totient is φ = 7489920.

The previous prime is 28087249. The next prime is 28087277. The reversal of 28087260 is 6278082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234001 + ... + 234120.

It is an arithmetic number, because the mean of its divisors is an integer number (3276854).

Almost surely, 2^28087260 is an apocalyptic number.

28087260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28087260 is an abundant number, since it is smaller than the sum of its proper divisors (50557236).

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

28087260 is a wasteful number, since it uses less digits than its factorization.

28087260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468133 (or 468131 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28087260 is about 5299.7415031301. The cubic root of 28087260 is about 303.9740138221.

The spelling of 28087260 in words is "twenty-eight million, eighty-seven thousand, two hundred sixty".