28047465 has 40 divisors (see below), whose sum is σ = 52481088. Its totient is φ = 14303520.

The previous prime is 28047463. The next prime is 28047469. The reversal of 28047465 is 56474082.

It is not a de Polignac number, because 28047465 - 2¹ = 28047463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28047463) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7810 + ... + 10820.

Almost surely, 2^28047465 is an apocalyptic number.

It is an amenable number.

28047465 is a deficient number, since it is larger than the sum of its proper divisors (24433623).

28047465 is a wasteful number, since it uses less digits than its factorization.

28047465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 28047465 is about 5295.9857439385. The cubic root of 28047465 is about 303.8303856747.

The spelling of 28047465 in words is "twenty-eight million, forty-seven thousand, four hundred sixty-five".