28295320 has 16 divisors (see below), whose sum is σ = 63664560. Its totient is φ = 11318112.

The previous prime is 28295299. The next prime is 28295321. The reversal of 28295320 is 2359282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28295321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353652 + ... + 353731.

It is an arithmetic number, because the mean of its divisors is an integer number (3979035).

Almost surely, 2^28295320 is an apocalyptic number.

28295320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28295320 is an abundant number, since it is smaller than the sum of its proper divisors (35369240).

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

28295320 is a wasteful number, since it uses less digits than its factorization.

28295320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707394 (or 707390 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28295320 is about 5319.3345448468. The cubic root of 28295320 is about 304.7227436505.

The spelling of 28295320 in words is "twenty-eight million, two hundred ninety-five thousand, three hundred twenty".