28983388 has 24 divisors (see below), whose sum is σ = 59838464. Its totient is φ = 12020400.

The previous prime is 28983373. The next prime is 28983391. The reversal of 28983388 is 88338982.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 15828 + ... + 17563.

Almost surely, 2^28983388 is an apocalyptic number.

28983388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28983388 is an abundant number, since it is smaller than the sum of its proper divisors (30855076).

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

28983388 is a wasteful number, since it uses less digits than its factorization.

28983388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33433 (or 33431 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 28983388 is about 5383.6222007121. The cubic root of 28983388 is about 307.1730077693.

The spelling of 28983388 in words is "twenty-eight million, nine hundred eighty-three thousand, three hundred eighty-eight".