28464905 has 8 divisors (see below), whose sum is σ = 39037632. Its totient is φ = 19518768.

The previous prime is 28464893. The next prime is 28464973. The reversal of 28464905 is 50946482.

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 28464905 - 2¹⁴ = 28448521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406607 + ... + 406676.

It is an arithmetic number, because the mean of its divisors is an integer number (4879704).

Almost surely, 2^28464905 is an apocalyptic number.

It is an amenable number.

28464905 is a deficient number, since it is larger than the sum of its proper divisors (10572727).

28464905 is an equidigital number, since it uses as much as digits as its factorization.

28464905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813295.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28464905 is about 5335.2511655966. The cubic root of 28464905 is about 305.3303059594.

The spelling of 28464905 in words is "twenty-eight million, four hundred sixty-four thousand, nine hundred five".