8450728 has 64 divisors (see below), whose sum is σ = 19051200. Its totient is φ = 3463680.

The previous prime is 8450719. The next prime is 8450749. The reversal of 8450728 is 8270548.

It is a junction number, because it is equal to n+sod(n) for n = 8450693 and 8450702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94908 + ... + 94996.

It is an arithmetic number, because the mean of its divisors is an integer number (297675).

Almost surely, 2^8450728 is an apocalyptic number.

8450728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8450728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9525600).

8450728 is an abundant number, since it is smaller than the sum of its proper divisors (10600472).

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

8450728 is a wasteful number, since it uses less digits than its factorization.

8450728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 8450728 is about 2907.0135878595. The cubic root of 8450728 is about 203.6876547805.

Adding to 8450728 its product of nonzero digits (17920), we get a palindrome (8468648).

The spelling of 8450728 in words is "eight million, four hundred fifty thousand, seven hundred twenty-eight".