28497366 has 16 divisors (see below), whose sum is σ = 63327600. Its totient is φ = 9499104.

The previous prime is 28497361. The next prime is 28497367. The reversal of 28497366 is 66379482.

28497366 is a `hidden beast` number, since 284 + 9 + 7 + 366 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497361) 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, 263811 + ... + 263918.

It is an arithmetic number, because the mean of its divisors is an integer number (3957975).

Almost surely, 2^28497366 is an apocalyptic number.

28497366 is an abundant number, since it is smaller than the sum of its proper divisors (34830234).

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

28497366 is a wasteful number, since it uses less digits than its factorization.

28497366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527740 (or 527734 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 28497366 is about 5338.2924236126. The cubic root of 28497366 is about 305.4463267443.

The spelling of 28497366 in words is "twenty-eight million, four hundred ninety-seven thousand, three hundred sixty-six".