28243596 has 24 divisors (see below), whose sum is σ = 69778800. Its totient is φ = 8860672.

The previous prime is 28243583. The next prime is 28243597. The reversal of 28243596 is 69534282.

It is a happy number.

It is a super-2 number, since 2×28243596² = 1595401430022432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28243597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69021 + ... + 69428.

It is an arithmetic number, because the mean of its divisors is an integer number (2907450).

Almost surely, 2^28243596 is an apocalyptic number.

It is an amenable number.

28243596 is an abundant number, since it is smaller than the sum of its proper divisors (41535204).

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

28243596 is a wasteful number, since it uses less digits than its factorization.

28243596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138473 (or 138471 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 28243596 is about 5314.4704345777. The cubic root of 28243596 is about 304.5369521135.

The spelling of 28243596 in words is "twenty-eight million, two hundred forty-three thousand, five hundred ninety-six".