28490267 has 8 divisors (see below), whose sum is σ = 31740240. Its totient is φ = 25391520.

The previous prime is 28490263. The next prime is 28490279. The reversal of 28490267 is 76209482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28490267 - 2² = 28490263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28490267.

It is not an unprimeable number, because it can be changed into a prime (28490263) 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, 37409 + ... + 38162.

It is an arithmetic number, because the mean of its divisors is an integer number (3967530).

Almost surely, 2^28490267 is an apocalyptic number.

28490267 is a deficient number, since it is larger than the sum of its proper divisors (3249973).

28490267 is a wasteful number, since it uses less digits than its factorization.

28490267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75613.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28490267 is about 5337.6274692039. The cubic root of 28490267 is about 305.4209613175.

The spelling of 28490267 in words is "twenty-eight million, four hundred ninety thousand, two hundred sixty-seven".