28460147 has 4 divisors (see below), whose sum is σ = 28522080. Its totient is φ = 28398216.

The previous prime is 28460129. The next prime is 28460161. The reversal of 28460147 is 74106482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74106482 = 2 ⋅37053241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28460147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28460167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30272 + ... + 31197.

It is an arithmetic number, because the mean of its divisors is an integer number (7130520).

Almost surely, 2^28460147 is an apocalyptic number.

28460147 is a deficient number, since it is larger than the sum of its proper divisors (61933).

28460147 is an equidigital number, since it uses as much as digits as its factorization.

28460147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61932.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28460147 is about 5334.8052448051. The cubic root of 28460147 is about 305.3132926987.

The spelling of 28460147 in words is "twenty-eight million, four hundred sixty thousand, one hundred forty-seven".