28372488 has 64 divisors (see below), whose sum is σ = 73872000. Its totient is φ = 9073152.

The previous prime is 28372481. The next prime is 28372489. The reversal of 28372488 is 88427382.

It is not an unprimeable number, because it can be changed into a prime (28372481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78853 + ... + 79211.

It is an arithmetic number, because the mean of its divisors is an integer number (1154250).

Almost surely, 2^28372488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28372488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36936000).

28372488 is an abundant number, since it is smaller than the sum of its proper divisors (45499512).

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

28372488 is a wasteful number, since it uses less digits than its factorization.

28372488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 490 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 28372488 is about 5326.5831449439. The cubic root of 28372488 is about 304.9995090917. Note that the first 3 decimals are identical.

It can be divided in two parts, 283 and 72488, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 28372488 in words is "twenty-eight million, three hundred seventy-two thousand, four hundred eighty-eight".