28341040 has 160 divisors (see below), whose sum is σ = 86244480. Its totient is φ = 8404992.

The previous prime is 28341031. The next prime is 28341077. The reversal of 28341040 is 4014382.

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 31 ways as a sum of consecutive naturals, for example, 123646 + ... + 123874.

It is an arithmetic number, because the mean of its divisors is an integer number (539028).

Almost surely, 2^28341040 is an apocalyptic number.

28341040 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 28341040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43122240).

28341040 is an abundant number, since it is smaller than the sum of its proper divisors (57903440).

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

28341040 is a wasteful number, since it uses less digits than its factorization.

28341040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28341040 is about 5323.6303402847. The cubic root of 28341040 is about 304.8867805156.

The spelling of 28341040 in words is "twenty-eight million, three hundred forty-one thousand, forty".