28940435 has 8 divisors (see below), whose sum is σ = 35087136. Its totient is φ = 22913280.

The previous prime is 28940423. The next prime is 28940437. The reversal of 28940435 is 53404982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28940435 - 2²⁰ = 27891859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28940395 and 28940404.

It is not an unprimeable number, because it can be changed into a prime (28940437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29351 + ... + 30320.

It is an arithmetic number, because the mean of its divisors is an integer number (4385892).

Almost surely, 2^28940435 is an apocalyptic number.

28940435 is a deficient number, since it is larger than the sum of its proper divisors (6146701).

28940435 is an equidigital number, since it uses as much as digits as its factorization.

28940435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59773.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28940435 is about 5379.6314929556. The cubic root of 28940435 is about 307.0211906277.

The spelling of 28940435 in words is "twenty-eight million, nine hundred forty thousand, four hundred thirty-five".