28047411 has 16 divisors (see below), whose sum is σ = 47488000. Its totient is φ = 16026984.

The previous prime is 28047407. The next prime is 28047413. The reversal of 28047411 is 11474082.

It is not a de Polignac number, because 28047411 - 2² = 28047407 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (28047413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74011 + ... + 74388.

It is an arithmetic number, because the mean of its divisors is an integer number (2968000).

Almost surely, 2^28047411 is an apocalyptic number.

28047411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28047411 is a deficient number, since it is larger than the sum of its proper divisors (19440589).

28047411 is a wasteful number, since it uses less digits than its factorization.

28047411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148415 (or 148409 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 28047411 is about 5295.9806457350. The cubic root of 28047411 is about 303.8301906856.

The spelling of 28047411 in words is "twenty-eight million, forty-seven thousand, four hundred eleven".