28719475 has 12 divisors (see below), whose sum is σ = 36482040. Its totient is φ = 22414400.

The previous prime is 28719473. The next prime is 28719497. The reversal of 28719475 is 57491782.

It is not a de Polignac number, because 28719475 - 2¹ = 28719473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28719473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12985 + ... + 15034.

It is an arithmetic number, because the mean of its divisors is an integer number (3040170).

Almost surely, 2^28719475 is an apocalyptic number.

28719475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28719475 is a deficient number, since it is larger than the sum of its proper divisors (7762565).

28719475 is a wasteful number, since it uses less digits than its factorization.

28719475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28070 (or 28065 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 28719475 is about 5359.0554205009. The cubic root of 28719475 is about 306.2378254219.

The spelling of 28719475 in words is "twenty-eight million, seven hundred nineteen thousand, four hundred seventy-five".