28042355 has 12 divisors (see below), whose sum is σ = 36988896. Its totient is φ = 20394000.

The previous prime is 28042349. The next prime is 28042363. The reversal of 28042355 is 55324082.

It is not a de Polignac number, because 28042355 - 2⁶ = 28042291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22571 + ... + 23780.

It is an arithmetic number, because the mean of its divisors is an integer number (3082408).

Almost surely, 2^28042355 is an apocalyptic number.

28042355 is a deficient number, since it is larger than the sum of its proper divisors (8946541).

28042355 is a wasteful number, since it uses less digits than its factorization.

28042355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46378 (or 46367 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28042355 is about 5295.5032810867. The cubic root of 28042355 is about 303.8119328178.

The spelling of 28042355 in words is "twenty-eight million, forty-two thousand, three hundred fifty-five".