28883544 has 32 divisors (see below), whose sum is σ = 76457520. Its totient is φ = 9061376.

The previous prime is 28883531. The next prime is 28883563. The reversal of 28883544 is 44538882.

It is a happy number.

It is a super-2 number, since 2×28883544² = 1668518227999872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28883496 and 28883505.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34989 + ... + 35804.

Almost surely, 2^28883544 is an apocalyptic number.

28883544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28883544 is an abundant number, since it is smaller than the sum of its proper divisors (47573976).

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

28883544 is a wasteful number, since it uses less digits than its factorization.

28883544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70819 (or 70815 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 28883544 is about 5374.3412619595. The cubic root of 28883544 is about 306.8198782837.

The spelling of 28883544 in words is "twenty-eight million, eight hundred eighty-three thousand, five hundred forty-four".