28346400 has 216 divisors, whose sum is σ = 103993344. Its totient is φ = 7257600.

The previous prime is 28346393. The next prime is 28346401. The reversal of 28346400 is 464382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28346401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223137 + ... + 223263.

Almost surely, 2^28346400 is an apocalyptic number.

28346400 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 28346400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51996672).

28346400 is an abundant number, since it is smaller than the sum of its proper divisors (75646944).

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

28346400 is a wasteful number, since it uses less digits than its factorization.

28346400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 28346400 is about 5324.1337323550. The cubic root of 28346400 is about 304.9059998777.

The spelling of 28346400 in words is "twenty-eight million, three hundred forty-six thousand, four hundred".