28297496 has 8 divisors (see below), whose sum is σ = 53057820. Its totient is φ = 14148744.

The previous prime is 28297463. The next prime is 28297559. The reversal of 28297496 is 69479282.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28297496.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1768586 + ... + 1768601.

Almost surely, 2^28297496 is an apocalyptic number.

It is an amenable number.

28297496 is a deficient number, since it is larger than the sum of its proper divisors (24760324).

28297496 is a wasteful number, since it uses less digits than its factorization.

28297496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537193 (or 3537189 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 28297496 is about 5319.5390777773. The cubic root of 28297496 is about 304.7305548327.

The spelling of 28297496 in words is "twenty-eight million, two hundred ninety-seven thousand, four hundred ninety-six".