28981350 has 36 divisors (see below), whose sum is σ = 77864436. Its totient is φ = 7728240.

The previous prime is 28981349. The next prime is 28981409. The reversal of 28981350 is 5318982.

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 17 ways as a sum of consecutive naturals, for example, 31752 + ... + 32651.

It is an arithmetic number, because the mean of its divisors is an integer number (2162901).

Almost surely, 2^28981350 is an apocalyptic number.

28981350 is an abundant number, since it is smaller than the sum of its proper divisors (48883086).

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

28981350 is a wasteful number, since it uses less digits than its factorization.

28981350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64421 (or 64413 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 28981350 is about 5383.4329196155. The cubic root of 28981350 is about 307.1658078603.

The spelling of 28981350 in words is "twenty-eight million, nine hundred eighty-one thousand, three hundred fifty".