28067040 has 192 divisors, whose sum is σ = 100699200. Its totient is φ = 7299072.

The previous prime is 28067029. The next prime is 28067057. The reversal of 28067040 is 4076082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28066995 and 28067013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315316 + ... + 315404.

It is an arithmetic number, because the mean of its divisors is an integer number (524475).

Almost surely, 2^28067040 is an apocalyptic number.

28067040 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 28067040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50349600).

28067040 is an abundant number, since it is smaller than the sum of its proper divisors (72632160).

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

28067040 is a wasteful number, since it uses less digits than its factorization.

28067040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 172 counting only the distinct ones).

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

The square root of 28067040 is about 5297.8335194681. The cubic root of 28067040 is about 303.9010527469.

The spelling of 28067040 in words is "twenty-eight million, sixty-seven thousand, forty".