30270198 has 64 divisors (see below), whose sum is σ = 72695808. Its totient is φ = 8220960.

The previous prime is 30270187. The next prime is 30270199. The reversal of 30270198 is 89107203.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30270199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87061 + ... + 87407.

It is an arithmetic number, because the mean of its divisors is an integer number (1135872).

Almost surely, 2^30270198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30270198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36347904).

30270198 is an abundant number, since it is smaller than the sum of its proper divisors (42425610).

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

30270198 is a wasteful number, since it uses less digits than its factorization.

30270198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 30270198 is about 5501.8358754147. The cubic root of 30270198 is about 311.6533172558.

It can be divided in two parts, 302 and 70198, that added together give a triangular number (70500 = T₃₇₅).

The spelling of 30270198 in words is "thirty million, two hundred seventy thousand, one hundred ninety-eight".