28488078 has 16 divisors (see below), whose sum is σ = 63306960. Its totient is φ = 9496008.

The previous prime is 28488067. The next prime is 28488127. The reversal of 28488078 is 87088482.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263725 + ... + 263832.

It is an arithmetic number, because the mean of its divisors is an integer number (3956685).

Almost surely, 2^28488078 is an apocalyptic number.

28488078 is an abundant number, since it is smaller than the sum of its proper divisors (34818882).

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

28488078 is a wasteful number, since it uses less digits than its factorization.

28488078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527568 (or 527562 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 28488078 is about 5337.4224116141. The cubic root of 28488078 is about 305.4131389548.

The spelling of 28488078 in words is "twenty-eight million, four hundred eighty-eight thousand, seventy-eight".