28269430 has 16 divisors (see below), whose sum is σ = 58154400. Its totient is φ = 9692352.

The previous prime is 28269401. The next prime is 28269491. The reversal of 28269430 is 3496282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201855 + ... + 201994.

It is an arithmetic number, because the mean of its divisors is an integer number (3634650).

Almost surely, 2^28269430 is an apocalyptic number.

28269430 is an abundant number, since it is smaller than the sum of its proper divisors (29884970).

28269430 is a wasteful number, since it uses less digits than its factorization.

28269430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403863.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28269430 is about 5316.9004128345. The cubic root of 28269430 is about 304.6297756348.

The spelling of 28269430 in words is "twenty-eight million, two hundred sixty-nine thousand, four hundred thirty".