28889411 has 2 divisors, whose sum is σ = 28889412. Its totient is φ = 28889410.

The previous prime is 28889407. The next prime is 28889453. The reversal of 28889411 is 11498882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28889411 - 2² = 28889407 is a prime.

It is a super-3 number, since 3×28889411³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28889011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444705 + 14444706.

It is an arithmetic number, because the mean of its divisors is an integer number (14444706).

Almost surely, 2^28889411 is an apocalyptic number.

28889411 is a deficient number, since it is larger than the sum of its proper divisors (1).

28889411 is an equidigital number, since it uses as much as digits as its factorization.

28889411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 41.

The square root of 28889411 is about 5374.8870685811. The cubic root of 28889411 is about 306.8406512465.

The spelling of 28889411 in words is "twenty-eight million, eight hundred eighty-nine thousand, four hundred eleven".