28862320 has 20 divisors (see below), whose sum is σ = 67105080. Its totient is φ = 11544896.

The previous prime is 28862303. The next prime is 28862329. The reversal of 28862320 is 2326882.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28862329) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 180310 + ... + 180469.

It is an arithmetic number, because the mean of its divisors is an integer number (3355254).

Almost surely, 2^28862320 is an apocalyptic number.

28862320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28862320 is an abundant number, since it is smaller than the sum of its proper divisors (38242760).

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

28862320 is a wasteful number, since it uses less digits than its factorization.

28862320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360792 (or 360786 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28862320 is about 5372.3663315154. The cubic root of 28862320 is about 306.7447081364.

The spelling of 28862320 in words is "twenty-eight million, eight hundred sixty-two thousand, three hundred twenty".