28887822 has 24 divisors (see below), whose sum is σ = 63016200. Its totient is φ = 9563760.

The previous prime is 28887797. The next prime is 28887823. The reversal of 28887822 is 22878882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28887823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2704 + ... + 8067.

It is an arithmetic number, because the mean of its divisors is an integer number (2625675).

Almost surely, 2^28887822 is an apocalyptic number.

28887822 is an abundant number, since it is smaller than the sum of its proper divisors (34128378).

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

28887822 is a wasteful number, since it uses less digits than its factorization.

28887822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10928 (or 10925 counting only the distinct ones).

The product of its digits is 229376, while the sum is 45.

The square root of 28887822 is about 5374.7392494892. The cubic root of 28887822 is about 306.8350254397.

The spelling of 28887822 in words is "twenty-eight million, eight hundred eighty-seven thousand, eight hundred twenty-two".