28909296 has 60 divisors (see below), whose sum is σ = 87135048. Its totient is φ = 8894592.

The previous prime is 28909273. The next prime is 28909297. The reversal of 28909296 is 69290982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28909297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5850 + ... + 9593.

Almost surely, 2^28909296 is an apocalyptic number.

28909296 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28909296 is an abundant number, since it is smaller than the sum of its proper divisors (58225752).

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

28909296 is a wasteful number, since it uses less digits than its factorization.

28909296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15470 (or 15461 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 28909296 is about 5376.7365566857. The cubic root of 28909296 is about 306.9110360548.

The spelling of 28909296 in words is "twenty-eight million, nine hundred nine thousand, two hundred ninety-six".