28236830 has 16 divisors (see below), whose sum is σ = 53816400. Its totient is φ = 10630272.

The previous prime is 28236827. The next prime is 28236833. The reversal of 28236830 is 3863282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28236827) and next prime (28236833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28236833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82880 + ... + 83219.

It is an arithmetic number, because the mean of its divisors is an integer number (3363525).

Almost surely, 2^28236830 is an apocalyptic number.

28236830 is a deficient number, since it is larger than the sum of its proper divisors (25579570).

28236830 is a wasteful number, since it uses less digits than its factorization.

28236830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166123.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28236830 is about 5313.8338325544. The cubic root of 28236830 is about 304.5126320095.

The spelling of 28236830 in words is "twenty-eight million, two hundred thirty-six thousand, eight hundred thirty".