30121098 has 32 divisors (see below), whose sum is σ = 69402624. Its totient is φ = 8536752.

The previous prime is 30121097. The next prime is 30121151. The reversal of 30121098 is 89012103.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30121097) 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, 2511 + ... + 8157.

It is an arithmetic number, because the mean of its divisors is an integer number (2168832).

Almost surely, 2^30121098 is an apocalyptic number.

30121098 is an abundant number, since it is smaller than the sum of its proper divisors (39281526).

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

30121098 is a wasteful number, since it uses less digits than its factorization.

30121098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5786.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 30121098 is about 5488.2691260542. The cubic root of 30121098 is about 311.1407777927.

The spelling of 30121098 in words is "thirty million, one hundred twenty-one thousand, ninety-eight".