30984198 has 16 divisors (see below), whose sum is σ = 70821120. Its totient is φ = 8852616.

The previous prime is 30984179. The next prime is 30984223. The reversal of 30984198 is 89148903.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 737719 = 30984198 / (3 + 0 + 9 + 8 + 4 + 1 + 9 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368818 + ... + 368901.

It is an arithmetic number, because the mean of its divisors is an integer number (4426320).

Almost surely, 2^30984198 is an apocalyptic number.

30984198 is an abundant number, since it is smaller than the sum of its proper divisors (39836922).

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

30984198 is a wasteful number, since it uses less digits than its factorization.

30984198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737731.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 30984198 is about 5566.3451204538. The cubic root of 30984198 is about 314.0846797187.

The spelling of 30984198 in words is "thirty million, nine hundred eighty-four thousand, one hundred ninety-eight".