28196493 has 16 divisors (see below), whose sum is σ = 40656000. Its totient is φ = 17279424.

The previous prime is 28196471. The next prime is 28196521. The reversal of 28196493 is 39469182.

It is not a de Polignac number, because 28196493 - 2⁵ = 28196461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28196293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8883 + ... + 11631.

It is an arithmetic number, because the mean of its divisors is an integer number (2541000).

Almost surely, 2^28196493 is an apocalyptic number.

It is an amenable number.

28196493 is a deficient number, since it is larger than the sum of its proper divisors (12459507).

28196493 is a wasteful number, since it uses less digits than its factorization.

28196493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028.

The product of its digits is 93312, while the sum is 42.

The square root of 28196493 is about 5310.0370055208. The cubic root of 28196493 is about 304.3675616693.

The spelling of 28196493 in words is "twenty-eight million, one hundred ninety-six thousand, four hundred ninety-three".