28591479 has 12 divisors (see below), whose sum is σ = 47198736. Its totient is φ = 16337952.

The previous prime is 28591471. The next prime is 28591483. The reversal of 28591479 is 97419582.

It is not a de Polignac number, because 28591479 - 2³ = 28591471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28591471) 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, 226854 + ... + 226979.

It is an arithmetic number, because the mean of its divisors is an integer number (3933228).

Almost surely, 2^28591479 is an apocalyptic number.

28591479 is a deficient number, since it is larger than the sum of its proper divisors (18607257).

28591479 is a wasteful number, since it uses less digits than its factorization.

28591479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453846 (or 453843 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 28591479 is about 5347.1000551701. The cubic root of 28591479 is about 305.7822043696.

The spelling of 28591479 in words is "twenty-eight million, five hundred ninety-one thousand, four hundred seventy-nine".