28438596 has 18 divisors (see below), whose sum is σ = 71886542. Its totient is φ = 9479520.

The previous prime is 28438591. The next prime is 28438601. The reversal of 28438596 is 69583482.

28438596 is a `hidden beast` number, since 28 + 4 + 38 + 596 = 666.

It is an interprime number because it is at equal distance from previous prime (28438591) and next prime (28438601).

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 876096 = 5250^2 + 936^2 .

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

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28438591) by changing a digit.

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, 394945 + ... + 395016.

Almost surely, 2^28438596 is an apocalyptic number.

It is an amenable number.

28438596 is an abundant number, since it is smaller than the sum of its proper divisors (43447946).

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

28438596 is a wasteful number, since it uses less digits than its factorization.

28438596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789971 (or 789966 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28438596 is about 5332.7850134803. The cubic root of 28438596 is about 305.2362086709.

The spelling of 28438596 in words is "twenty-eight million, four hundred thirty-eight thousand, five hundred ninety-six".