28887741 has 12 divisors (see below), whose sum is σ = 43165980. Its totient is φ = 18594240.

The previous prime is 28887707. The next prime is 28887767. The reversal of 28887741 is 14778882.

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 10791225 = 4254^2 + 3285^2 .

It is not a de Polignac number, because 28887741 - 2⁷ = 28887613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28887041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55080 + ... + 55601.

It is an arithmetic number, because the mean of its divisors is an integer number (3597165).

Almost surely, 2^28887741 is an apocalyptic number.

It is an amenable number.

28887741 is a deficient number, since it is larger than the sum of its proper divisors (14278239).

28887741 is a wasteful number, since it uses less digits than its factorization.

28887741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110716 (or 110713 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 28887741 is about 5374.7317142347. The cubic root of 28887741 is about 306.8347386561.

The spelling of 28887741 in words is "twenty-eight million, eight hundred eighty-seven thousand, seven hundred forty-one".