28497268 has 6 divisors (see below), whose sum is σ = 49870226. Its totient is φ = 14248632.

The previous prime is 28497263. The next prime is 28497269. The reversal of 28497268 is 86279482.

It can be written as a sum of positive squares in only one way, i.e., 26749584 + 1747684 = 5172^2 + 1322^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3562155 + ... + 3562162.

Almost surely, 2^28497268 is an apocalyptic number.

It is an amenable number.

28497268 is a deficient number, since it is larger than the sum of its proper divisors (21372958).

28497268 is a wasteful number, since it uses less digits than its factorization.

28497268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124321 (or 7124319 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 28497268 is about 5338.2832446396. The cubic root of 28497268 is about 305.4459766093.

The spelling of 28497268 in words is "twenty-eight million, four hundred ninety-seven thousand, two hundred sixty-eight".