28394000 has 40 divisors (see below), whose sum is σ = 68661528. Its totient is φ = 11356800.

The previous prime is 28393993. The next prime is 28394027. The reversal of 28394000 is 49382.

It can be written as a sum of positive squares in 4 ways, for example, as 473344 + 27920656 = 688^2 + 5284^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 9098.

Almost surely, 2^28394000 is an apocalyptic number.

28394000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28394000 is an abundant number, since it is smaller than the sum of its proper divisors (40267528).

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

28394000 is a wasteful number, since it uses less digits than its factorization.

28394000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14220 (or 14204 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 28394000 is about 5328.6020680850. The cubic root of 28394000 is about 305.0765730879.

The spelling of 28394000 in words is "twenty-eight million, three hundred ninety-four thousand".