28497273 has 12 divisors (see below), whose sum is σ = 44200080. Its totient is φ = 16284072.

The previous prime is 28497269. The next prime is 28497281. The reversal of 28497273 is 37279482.

It is not a de Polignac number, because 28497273 - 2² = 28497269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28497263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96783 + ... + 97076.

It is an arithmetic number, because the mean of its divisors is an integer number (3683340).

Almost surely, 2^28497273 is an apocalyptic number.

It is an amenable number.

28497273 is a deficient number, since it is larger than the sum of its proper divisors (15702807).

28497273 is a wasteful number, since it uses less digits than its factorization.

28497273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193876 (or 193869 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 28497273 is about 5338.2837129549. The cubic root of 28497273 is about 305.4459944734.

The spelling of 28497273 in words is "twenty-eight million, four hundred ninety-seven thousand, two hundred seventy-three".