28761579 has 60 divisors (see below), whose sum is σ = 53308632. Its totient is φ = 14941080.

The previous prime is 28761553. The next prime is 28761587. The reversal of 28761579 is 97516782.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

28761579 is a `hidden beast` number, since 2 + 8 + 76 + 1 + 579 = 666.

It is not a de Polignac number, because 28761579 - 2⁸ = 28761323 is a prime.

Its product of digits (211680) is a multiple of the sum of its prime divisors (21).

It is not an unprimeable number, because it can be changed into a prime (28761529) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2614684 + ... + 2614694.

Almost surely, 2^28761579 is an apocalyptic number.

28761579 is a deficient number, since it is larger than the sum of its proper divisors (24547053).

28761579 is an frugal number, since it uses more digits than its factorization.

28761579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 21 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 28761579 is about 5362.9822860047. The cubic root of 28761579 is about 306.3874050080.

The spelling of 28761579 in words is "twenty-eight million, seven hundred sixty-one thousand, five hundred seventy-nine".