28334430 has 24 divisors (see below), whose sum is σ = 73669752. Its totient is φ = 7555824.

The previous prime is 28334429. The next prime is 28334473. The reversal of 28334430 is 3443382.

It is a junction number, because it is equal to n+sod(n) for n = 28334394 and 28334403.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 157324 + ... + 157503.

It is an arithmetic number, because the mean of its divisors is an integer number (3069573).

Almost surely, 2^28334430 is an apocalyptic number.

28334430 is an abundant number, since it is smaller than the sum of its proper divisors (45335322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28334430 is a wasteful number, since it uses less digits than its factorization.

28334430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314840 (or 314837 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 28334430 is about 5323.0094871229. The cubic root of 28334430 is about 304.8630756890.

The spelling of 28334430 in words is "twenty-eight million, three hundred thirty-four thousand, four hundred thirty".