28098030 has 32 divisors (see below), whose sum is σ = 67590144. Its totient is φ = 7475616.

The previous prime is 28098023. The next prime is 28098041. The reversal of 28098030 is 3089082.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17439 + ... + 18981.

It is an arithmetic number, because the mean of its divisors is an integer number (2112192).

Almost surely, 2^28098030 is an apocalyptic number.

28098030 is an abundant number, since it is smaller than the sum of its proper divisors (39492114).

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

28098030 is a wasteful number, since it uses less digits than its factorization.

28098030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28098030 is about 5300.7574930381. The cubic root of 28098030 is about 304.0128615865.

The spelling of 28098030 in words is "twenty-eight million, ninety-eight thousand, thirty".