28283697 has 24 divisors (see below), whose sum is σ = 44442944. Its totient is φ = 17229024.

The previous prime is 28283693. The next prime is 28283711. The reversal of 28283697 is 79638282.

28283697 is a `hidden beast` number, since 282 + 8 + 369 + 7 = 666.

It is not a de Polignac number, because 28283697 - 2² = 28283693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28283693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10878 + ... + 13224.

Almost surely, 2^28283697 is an apocalyptic number.

It is an amenable number.

28283697 is a deficient number, since it is larger than the sum of its proper divisors (16159247).

28283697 is a wasteful number, since it uses less digits than its factorization.

28283697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2466 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28283697 is about 5318.2419087514. The cubic root of 28283697 is about 304.6810138106.

The spelling of 28283697 in words is "twenty-eight million, two hundred eighty-three thousand, six hundred ninety-seven".