28005414 has 8 divisors (see below), whose sum is σ = 56010840. Its totient is φ = 9335136.

The previous prime is 28005407. The next prime is 28005433. The reversal of 28005414 is 41450082.

It is a sphenic number, since it is the product of 3 distinct primes.

28005414 is an admirable number.

It is a super-2 number, since 2×28005414² = 1568606426622792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333779 + ... + 2333790.

It is an arithmetic number, because the mean of its divisors is an integer number (7001355).

Almost surely, 2^28005414 is an apocalyptic number.

28005414 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28005414 is a wasteful number, since it uses less digits than its factorization.

28005414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667574.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28005414 is about 5292.0141723166. The cubic root of 28005414 is about 303.6784674652.

Adding to 28005414 its reverse (41450082), we get a palindrome (69455496).

The spelling of 28005414 in words is "twenty-eight million, five thousand, four hundred fourteen".