28497436 has 36 divisors (see below), whose sum is σ = 55472704. Its totient is φ = 12798720.

The previous prime is 28497421. The next prime is 28497451. The reversal of 28497436 is 63479482.

It is an interprime number because it is at equal distance from previous prime (28497421) and next prime (28497451).

It is a junction number, because it is equal to n+sod(n) for n = 28497392 and 28497401.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46645 + ... + 47251.

Almost surely, 2^28497436 is an apocalyptic number.

It is an amenable number.

28497436 is a deficient number, since it is larger than the sum of its proper divisors (26975268).

28497436 is a wasteful number, since it uses less digits than its factorization.

28497436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 717 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 28497436 is about 5338.2989800123. The cubic root of 28497436 is about 305.4465768402.

The spelling of 28497436 in words is "twenty-eight million, four hundred ninety-seven thousand, four hundred thirty-six".