28979435 has 4 divisors (see below), whose sum is σ = 34775328. Its totient is φ = 23183544.

The previous prime is 28979417. The next prime is 28979437. The reversal of 28979435 is 53497982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28979435 - 2⁶ = 28979371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28979435.

It is not an unprimeable number, because it can be changed into a prime (28979437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2897939 + ... + 2897948.

It is an arithmetic number, because the mean of its divisors is an integer number (8693832).

Almost surely, 2^28979435 is an apocalyptic number.

28979435 is a deficient number, since it is larger than the sum of its proper divisors (5795893).

28979435 is an equidigital number, since it uses as much as digits as its factorization.

28979435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795892.

The product of its digits is 544320, while the sum is 47.

The square root of 28979435 is about 5383.2550561904. The cubic root of 28979435 is about 307.1590421820.

The spelling of 28979435 in words is "twenty-eight million, nine hundred seventy-nine thousand, four hundred thirty-five".