28395400 has 48 divisors (see below), whose sum is σ = 72026640. Its totient is φ = 10324800.

The previous prime is 28395373. The next prime is 28395413. The reversal of 28395400 is 459382.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4254 + ... + 8653.

It is an arithmetic number, because the mean of its divisors is an integer number (1500555).

Almost surely, 2^28395400 is an apocalyptic number.

28395400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28395400 is an abundant number, since it is smaller than the sum of its proper divisors (43631240).

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

28395400 is a wasteful number, since it uses less digits than its factorization.

28395400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934 (or 12925 counting only the distinct ones).

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

The square root of 28395400 is about 5328.7334330026. The cubic root of 28395400 is about 305.0815870601.

The spelling of 28395400 in words is "twenty-eight million, three hundred ninety-five thousand, four hundred".