28841888 has 12 divisors (see below), whose sum is σ = 56782530. Its totient is φ = 14420928.

The previous prime is 28841887. The next prime is 28841909. The reversal of 28841888 is 88814882.

It can be written as a sum of positive squares in only one way, i.e., 26915344 + 1926544 = 5188^2 + 1388^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28841887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450623 + ... + 450686.

Almost surely, 2^28841888 is an apocalyptic number.

It is an amenable number.

28841888 is a deficient number, since it is larger than the sum of its proper divisors (27940642).

28841888 is an equidigital number, since it uses as much as digits as its factorization.

28841888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901319 (or 901311 counting only the distinct ones).

The product of its digits is 262144, while the sum is 47.

The square root of 28841888 is about 5370.4644119480. The cubic root of 28841888 is about 306.6723082348.

The spelling of 28841888 in words is "twenty-eight million, eight hundred forty-one thousand, eight hundred eighty-eight".