28380248 has 16 divisors (see below), whose sum is σ = 57306480. Its totient is φ = 13098528.

The previous prime is 28380227. The next prime is 28380251. The reversal of 28380248 is 84208382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136340 + ... + 136547.

It is an arithmetic number, because the mean of its divisors is an integer number (3581655).

Almost surely, 2^28380248 is an apocalyptic number.

It is an amenable number.

28380248 is an abundant number, since it is smaller than the sum of its proper divisors (28926232).

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

28380248 is a wasteful number, since it uses less digits than its factorization.

28380248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272906 (or 272902 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 28380248 is about 5327.3115170788. The cubic root of 28380248 is about 305.0273127919.

The spelling of 28380248 in words is "twenty-eight million, three hundred eighty thousand, two hundred forty-eight".