28307461 has 16 divisors (see below), whose sum is σ = 34996864. Its totient is φ = 22296384.

The previous prime is 28307453. The next prime is 28307483. The reversal of 28307461 is 16470382.

It is a cyclic number.

It is not a de Polignac number, because 28307461 - 2³ = 28307453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24646 + ... + 25768.

It is an arithmetic number, because the mean of its divisors is an integer number (2187304).

Almost surely, 2^28307461 is an apocalyptic number.

It is an amenable number.

28307461 is a deficient number, since it is larger than the sum of its proper divisors (6689403).

28307461 is a wasteful number, since it uses less digits than its factorization.

28307461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28307461 is about 5320.4756366325. The cubic root of 28307461 is about 304.7663210549.

The spelling of 28307461 in words is "twenty-eight million, three hundred seven thousand, four hundred sixty-one".