28006488 has 48 divisors (see below), whose sum is σ = 76096800. Its totient is φ = 9305280.

The previous prime is 28006477. The next prime is 28006493. The reversal of 28006488 is 88460082.

28006488 is a `hidden beast` number, since 2 + 8 + 0 + 0 + 648 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38593 + ... + 39311.

It is an arithmetic number, because the mean of its divisors is an integer number (1585350).

Almost surely, 2^28006488 is an apocalyptic number.

It is an amenable number.

28006488 is an abundant number, since it is smaller than the sum of its proper divisors (48090312).

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

28006488 is a wasteful number, since it uses less digits than its factorization.

28006488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 28006488 is about 5292.1156449949. The cubic root of 28006488 is about 303.6823494111.

The spelling of 28006488 in words is "twenty-eight million, six thousand, four hundred eighty-eight".