28517461 has 12 divisors (see below), whose sum is σ = 34920480. Its totient is φ = 23156280.

The previous prime is 28517459. The next prime is 28517477. The reversal of 28517461 is 16471582.

It is not a de Polignac number, because 28517461 - 2¹ = 28517459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28517431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14385 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (2910040).

Almost surely, 2^28517461 is an apocalyptic number.

It is an amenable number.

28517461 is a deficient number, since it is larger than the sum of its proper divisors (6403019).

28517461 is a wasteful number, since it uses less digits than its factorization.

28517461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30664 (or 30657 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 28517461 is about 5340.1742480934. The cubic root of 28517461 is about 305.5181053287.

The spelling of 28517461 in words is "twenty-eight million, five hundred seventeen thousand, four hundred sixty-one".