30291998 has 16 divisors (see below), whose sum is σ = 49906800. Its totient is φ = 13675200.

The previous prime is 30291983. The next prime is 30292001. The reversal of 30291998 is 89919203.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1343 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (3119175).

Almost surely, 2^30291998 is an apocalyptic number.

30291998 is a deficient number, since it is larger than the sum of its proper divisors (19614802).

30291998 is a wasteful number, since it uses less digits than its factorization.

30291998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9403.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 30291998 is about 5503.8166757260. The cubic root of 30291998 is about 311.7281148283.

The spelling of 30291998 in words is "thirty million, two hundred ninety-one thousand, nine hundred ninety-eight".