28038430 has 32 divisors (see below), whose sum is σ = 57936384. Its totient is φ = 9570336.

The previous prime is 28038421. The next prime is 28038499. The reversal of 28038430 is 3483082.

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, 17649 + ... + 19171.

It is an arithmetic number, because the mean of its divisors is an integer number (1810512).

Almost surely, 2^28038430 is an apocalyptic number.

28038430 is an abundant number, since it is smaller than the sum of its proper divisors (29897954).

28038430 is a wasteful number, since it uses less digits than its factorization.

28038430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28038430 is about 5295.1326706703. The cubic root of 28038430 is about 303.7977576237.

The spelling of 28038430 in words is "twenty-eight million, thirty-eight thousand, four hundred thirty".