28408296 has 32 divisors (see below), whose sum is σ = 81167040. Its totient is φ = 8116608.

The previous prime is 28408279. The next prime is 28408297. The reversal of 28408296 is 69280482.

It is not an unprimeable number, because it can be changed into a prime (28408297) 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, 84381 + ... + 84716.

It is an arithmetic number, because the mean of its divisors is an integer number (2536470).

Almost surely, 2^28408296 is an apocalyptic number.

It is an amenable number.

28408296 is an abundant number, since it is smaller than the sum of its proper divisors (52758744).

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

28408296 is a wasteful number, since it uses less digits than its factorization.

28408296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169113 (or 169109 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28408296 is about 5329.9433392861. The cubic root of 28408296 is about 305.1277651582.

The spelling of 28408296 in words is "twenty-eight million, four hundred eight thousand, two hundred ninety-six".