28455147 has 12 divisors (see below), whose sum is σ = 46973680. Its totient is φ = 16260048.

The previous prime is 28455137. The next prime is 28455157. The reversal of 28455147 is 74155482.

It is an interprime number because it is at equal distance from previous prime (28455137) and next prime (28455157).

It is not a de Polignac number, because 28455147 - 2⁷ = 28455019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28455137) 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 11 ways as a sum of consecutive naturals, for example, 225772 + ... + 225897.

Almost surely, 2^28455147 is an apocalyptic number.

28455147 is a deficient number, since it is larger than the sum of its proper divisors (18518533).

28455147 is a wasteful number, since it uses less digits than its factorization.

28455147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451682 (or 451679 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 28455147 is about 5334.3366035525. The cubic root of 28455147 is about 305.2954120711.

The spelling of 28455147 in words is "twenty-eight million, four hundred fifty-five thousand, one hundred forty-seven".