28243696 has 20 divisors (see below), whose sum is σ = 58931992. Its totient is φ = 13035456.

The previous prime is 28243687. The next prime is 28243717. The reversal of 28243696 is 69634282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67686 + ... + 68101.

Almost surely, 2^28243696 is an apocalyptic number.

28243696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28243696 is an abundant number, since it is smaller than the sum of its proper divisors (30688296).

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

28243696 is a wasteful number, since it uses less digits than its factorization.

28243696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135808 (or 135802 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 28243696 is about 5314.4798428445. The cubic root of 28243696 is about 304.5373115302.

The spelling of 28243696 in words is "twenty-eight million, two hundred forty-three thousand, six hundred ninety-six".