28144888 has 16 divisors (see below), whose sum is σ = 53667000. Its totient is φ = 13833696.

The previous prime is 28144873. The next prime is 28144903. The reversal of 28144888 is 88844182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28144873) and next prime (28144903).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29343 + ... + 30286.

Almost surely, 2^28144888 is an apocalyptic number.

It is an amenable number.

28144888 is a deficient number, since it is larger than the sum of its proper divisors (25522112).

28144888 is a wasteful number, since it uses less digits than its factorization.

28144888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59694 (or 59690 counting only the distinct ones).

The product of its digits is 131072, while the sum is 43.

The square root of 28144888 is about 5305.1755861611. The cubic root of 28144888 is about 304.1817645682.

The spelling of 28144888 in words is "twenty-eight million, one hundred forty-four thousand, eight hundred eighty-eight".