28040598 has 48 divisors (see below), whose sum is σ = 63382176. Its totient is φ = 8951040.

The previous prime is 28040581. The next prime is 28040603. The reversal of 28040598 is 89504082.

28040598 is a `hidden beast` number, since 28 + 0 + 40 + 598 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46990 + ... + 47582.

It is an arithmetic number, because the mean of its divisors is an integer number (1320462).

Almost surely, 2^28040598 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28040598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31691088).

28040598 is an abundant number, since it is smaller than the sum of its proper divisors (35341578).

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

28040598 is a wasteful number, since it uses less digits than its factorization.

28040598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28040598 is about 5295.3373830191. The cubic root of 28040598 is about 303.8055875505.

The spelling of 28040598 in words is "twenty-eight million, forty thousand, five hundred ninety-eight".