28901335 has 4 divisors (see below), whose sum is σ = 34681608. Its totient is φ = 23121064.

The previous prime is 28901311. The next prime is 28901387. The reversal of 28901335 is 53310982.

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 28901335 - 2¹¹ = 28899287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28901297 and 28901306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890129 + ... + 2890138.

It is an arithmetic number, because the mean of its divisors is an integer number (8670402).

Almost surely, 2^28901335 is an apocalyptic number.

28901335 is a deficient number, since it is larger than the sum of its proper divisors (5780273).

28901335 is an equidigital number, since it uses as much as digits as its factorization.

28901335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5780272.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 28901335 is about 5375.9961867546. The cubic root of 28901335 is about 306.8828612297.

It can be divided in two parts, 2890 and 1335, that added together give a square (4225 = 65²).

The spelling of 28901335 in words is "twenty-eight million, nine hundred one thousand, three hundred thirty-five".