28198030 has 32 divisors (see below), whose sum is σ = 59198400. Its totient is φ = 9666720.

The previous prime is 28198021. The next prime is 28198057. The reversal of 28198030 is 3089182.

It is a junction number, because it is equal to n+sod(n) for n = 28197983 and 28198001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681 + ... + 7540.

It is an arithmetic number, because the mean of its divisors is an integer number (1849950).

Almost surely, 2^28198030 is an apocalyptic number.

28198030 is an abundant number, since it is smaller than the sum of its proper divisors (31000370).

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

28198030 is an equidigital number, since it uses as much as digits as its factorization.

28198030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8249 (or 8235 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 28198030 is about 5310.1817294703. The cubic root of 28198030 is about 304.3730919604.

The spelling of 28198030 in words is "twenty-eight million, one hundred ninety-eight thousand, thirty".