28864600 has 24 divisors (see below), whose sum is σ = 67110660. Its totient is φ = 11545760.

The previous prime is 28864597. The next prime is 28864603. The reversal of 28864600 is 646882.

It is an interprime number because it is at equal distance from previous prime (28864597) and next prime (28864603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28864603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71962 + ... + 72361.

Almost surely, 2^28864600 is an apocalyptic number.

28864600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28864600 is an abundant number, since it is smaller than the sum of its proper divisors (38246060).

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

28864600 is a wasteful number, since it uses less digits than its factorization.

28864600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144339 (or 144330 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28864600 is about 5372.5785243214. The cubic root of 28864600 is about 306.7527850976.

The spelling of 28864600 in words is "twenty-eight million, eight hundred sixty-four thousand, six hundred".