28607400 has 144 divisors (see below), whose sum is σ = 100395360. Its totient is φ = 7286400.

The previous prime is 28607351. The next prime is 28607417. The reversal of 28607400 is 470682.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 41055 + ... + 41745.

It is an arithmetic number, because the mean of its divisors is an integer number (697190).

Almost surely, 2^28607400 is an apocalyptic number.

28607400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28607400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50197680).

28607400 is an abundant number, since it is smaller than the sum of its proper divisors (71787960).

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

28607400 is a wasteful number, since it uses less digits than its factorization.

28607400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28607400 is about 5348.5885988735. The cubic root of 28607400 is about 305.8389515228.

The spelling of 28607400 in words is "twenty-eight million, six hundred seven thousand, four hundred".