28395396 has 18 divisors (see below), whose sum is σ = 71777342. Its totient is φ = 9465120.

The previous prime is 28395373. The next prime is 28395413. The reversal of 28395396 is 69359382.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 8468100 = 4464^2 + 2910^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 394345 + ... + 394416.

Almost surely, 2^28395396 is an apocalyptic number.

It is an amenable number.

28395396 is an abundant number, since it is smaller than the sum of its proper divisors (43381946).

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

28395396 is a wasteful number, since it uses less digits than its factorization.

28395396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788771 (or 788766 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 28395396 is about 5328.7330576789. The cubic root of 28395396 is about 305.0815727347.

The spelling of 28395396 in words is "twenty-eight million, three hundred ninety-five thousand, three hundred ninety-six".