28013335 has 16 divisors (see below), whose sum is σ = 39051072. Its totient is φ = 18892800.

The previous prime is 28013317. The next prime is 28013347. The reversal of 28013335 is 53331082.

It is not a de Polignac number, because 28013335 - 2¹¹ = 28011287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4426 + ... + 8695.

It is an arithmetic number, because the mean of its divisors is an integer number (2440692).

Almost surely, 2^28013335 is an apocalyptic number.

28013335 is a deficient number, since it is larger than the sum of its proper divisors (11037737).

28013335 is a wasteful number, since it uses less digits than its factorization.

28013335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 28013335 is about 5292.7625112034. The cubic root of 28013335 is about 303.7070953868.

The spelling of 28013335 in words is "twenty-eight million, thirteen thousand, three hundred thirty-five".