28076320 has 48 divisors (see below), whose sum is σ = 66648960. Its totient is φ = 11176704.

The previous prime is 28076317. The next prime is 28076341. The reversal of 28076320 is 2367082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60409 + ... + 60871.

It is an arithmetic number, because the mean of its divisors is an integer number (1388520).

Almost surely, 2^28076320 is an apocalyptic number.

28076320 is a gapful number since it is divisible by the number (20) 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 28076320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33324480).

28076320 is an abundant number, since it is smaller than the sum of its proper divisors (38572640).

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

28076320 is a wasteful number, since it uses less digits than its factorization.

28076320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 28076320 is about 5298.7092767956. The cubic root of 28076320 is about 303.9345426934.

The spelling of 28076320 in words is "twenty-eight million, seventy-six thousand, three hundred twenty".