28762197 has 16 divisors (see below), whose sum is σ = 39517632. Its totient is φ = 18596480.

The previous prime is 28762193. The next prime is 28762207. The reversal of 28762197 is 79126782.

It is a cyclic number.

It is not a de Polignac number, because 28762197 - 2² = 28762193 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28762193) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 23638 + ... + 24824.

It is an arithmetic number, because the mean of its divisors is an integer number (2469852).

Almost surely, 2^28762197 is an apocalyptic number.

It is an amenable number.

28762197 is a deficient number, since it is larger than the sum of its proper divisors (10755435).

28762197 is a wasteful number, since it uses less digits than its factorization.

28762197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its digits is 84672, while the sum is 42.

The square root of 28762197 is about 5363.0399028909. The cubic root of 28762197 is about 306.3895994409.

The spelling of 28762197 in words is "twenty-eight million, seven hundred sixty-two thousand, one hundred ninety-seven".