28843488 has 36 divisors (see below), whose sum is σ = 82024488. Its totient is φ = 9614400.

The previous prime is 28843481. The next prime is 28843517. The reversal of 28843488 is 88434882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28843488² = 1663893600012288, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28843481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49788 + ... + 50363.

It is an arithmetic number, because the mean of its divisors is an integer number (2278458).

Almost surely, 2^28843488 is an apocalyptic number.

It is an amenable number.

28843488 is an abundant number, since it is smaller than the sum of its proper divisors (53181000).

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

28843488 is a wasteful number, since it uses less digits than its factorization.

28843488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100167 (or 100156 counting only the distinct ones).

The product of its digits is 393216, while the sum is 45.

The square root of 28843488 is about 5370.6133727909. The cubic root of 28843488 is about 306.6779789988.

The spelling of 28843488 in words is "twenty-eight million, eight hundred forty-three thousand, four hundred eighty-eight".