28916475 has 24 divisors (see below), whose sum is σ = 54639360. Its totient is φ = 13218720.

The previous prime is 28916471. The next prime is 28916479. The reversal of 28916475 is 57461982.

It is an interprime number because it is at equal distance from previous prime (28916471) and next prime (28916479).

It is not a de Polignac number, because 28916475 - 2² = 28916471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28916471) 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, 27015 + ... + 28064.

It is an arithmetic number, because the mean of its divisors is an integer number (2276640).

Almost surely, 2^28916475 is an apocalyptic number.

28916475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28916475 is a deficient number, since it is larger than the sum of its proper divisors (25722885).

28916475 is a wasteful number, since it uses less digits than its factorization.

28916475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55099 (or 55094 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 28916475 is about 5377.4041135105. The cubic root of 28916475 is about 306.9364388637.

The spelling of 28916475 in words is "twenty-eight million, nine hundred sixteen thousand, four hundred seventy-five".