28711896 has 16 divisors (see below), whose sum is σ = 71779800. Its totient is φ = 9570624.

The previous prime is 28711873. The next prime is 28711897. The reversal of 28711896 is 69811782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598141 + ... + 598188.

Almost surely, 2^28711896 is an apocalyptic number.

It is an amenable number.

28711896 is an abundant number, since it is smaller than the sum of its proper divisors (43067904).

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

28711896 is a wasteful number, since it uses less digits than its factorization.

28711896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196338 (or 1196334 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 28711896 is about 5358.3482529600. The cubic root of 28711896 is about 306.2108845780.

The spelling of 28711896 in words is "twenty-eight million, seven hundred eleven thousand, eight hundred ninety-six".