28470975 has 24 divisors (see below), whose sum is σ = 50694672. Its totient is φ = 14016000.

The previous prime is 28470973. The next prime is 28470977. The reversal of 28470975 is 57907482.

It is an interprime number because it is at equal distance from previous prime (28470973) and next prime (28470977).

It is not a de Polignac number, because 28470975 - 2¹ = 28470973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13626 + ... + 15575.

It is an arithmetic number, because the mean of its divisors is an integer number (2112278).

Almost surely, 2^28470975 is an apocalyptic number.

28470975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28470975 is a deficient number, since it is larger than the sum of its proper divisors (22223697).

28470975 is a wasteful number, since it uses less digits than its factorization.

28470975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29227 (or 29222 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 28470975 is about 5335.8199932157. The cubic root of 28470975 is about 305.3520078086.

The spelling of 28470975 in words is "twenty-eight million, four hundred seventy thousand, nine hundred seventy-five".