28350320 has 40 divisors (see below), whose sum is σ = 66156480. Its totient is φ = 11298560.

The previous prime is 28350307. The next prime is 28350331. The reversal of 28350320 is 2305382.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 30665 + ... + 31575.

It is an arithmetic number, because the mean of its divisors is an integer number (1653912).

Almost surely, 2^28350320 is an apocalyptic number.

28350320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28350320 is an abundant number, since it is smaller than the sum of its proper divisors (37806160).

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

28350320 is a wasteful number, since it uses less digits than its factorization.

28350320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 28350320 is about 5324.5018546339. The cubic root of 28350320 is about 304.9200542953.

The spelling of 28350320 in words is "twenty-eight million, three hundred fifty thousand, three hundred twenty".