28908461 has 8 divisors (see below), whose sum is σ = 29902848. Its totient is φ = 27918000.

The previous prime is 28908421. The next prime is 28908469. The reversal of 28908461 is 16480982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28908461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28908469) 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, 28676 + ... + 29666.

It is an arithmetic number, because the mean of its divisors is an integer number (3737856).

Almost surely, 2^28908461 is an apocalyptic number.

It is an amenable number.

28908461 is a deficient number, since it is larger than the sum of its proper divisors (994387).

28908461 is an equidigital number, since it uses as much as digits as its factorization.

28908461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 28908461 is about 5376.6589067933. The cubic root of 28908461 is about 306.9080811438.

The spelling of 28908461 in words is "twenty-eight million, nine hundred eight thousand, four hundred sixty-one".