28990268 has 6 divisors (see below), whose sum is σ = 50732976. Its totient is φ = 14495132.

The previous prime is 28990267. The next prime is 28990289. The reversal of 28990268 is 86209982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28990261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623780 + ... + 3623787.

It is an arithmetic number, because the mean of its divisors is an integer number (8455496).

Almost surely, 2^28990268 is an apocalyptic number.

It is an amenable number.

28990268 is a deficient number, since it is larger than the sum of its proper divisors (21742708).

28990268 is a wasteful number, since it uses less digits than its factorization.

28990268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247571 (or 7247569 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 28990268 is about 5384.2611377978. The cubic root of 28990268 is about 307.1973111518.

The spelling of 28990268 in words is "twenty-eight million, nine hundred ninety thousand, two hundred sixty-eight".