30555198 has 32 divisors (see below), whose sum is σ = 69484800. Its totient is φ = 9947448.

The previous prime is 30555197. The next prime is 30555199. The reversal of 30555198 is 89155503.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30555197) and next prime (30555199).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30555191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (2171400).

Almost surely, 2^30555198 is an apocalyptic number.

30555198 is an abundant number, since it is smaller than the sum of its proper divisors (38929602).

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

30555198 is a wasteful number, since it uses less digits than its factorization.

30555198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213 (or 13207 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 30555198 is about 5527.6756417142. The cubic root of 30555198 is about 312.6283564449.

The spelling of 30555198 in words is "thirty million, five hundred fifty-five thousand, one hundred ninety-eight".