30525198 has 32 divisors (see below), whose sum is σ = 66856320. Its totient is φ = 9214560.

The previous prime is 30525179. The next prime is 30525199. The reversal of 30525198 is 89152503.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30525199) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20193 + ... + 21651.

It is an arithmetic number, because the mean of its divisors is an integer number (2089260).

Almost surely, 2^30525198 is an apocalyptic number.

30525198 is an abundant number, since it is smaller than the sum of its proper divisors (36331122).

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

30525198 is a wasteful number, since it uses less digits than its factorization.

30525198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 30525198 is about 5524.9613573309. The cubic root of 30525198 is about 312.5260070089.

The spelling of 30525198 in words is "thirty million, five hundred twenty-five thousand, one hundred ninety-eight".