30085398 has 128 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 7892640.

The previous prime is 30085387. The next prime is 30085409. The reversal of 30085398 is 89358003.

It is an interprime number because it is at equal distance from previous prime (30085387) and next prime (30085409).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 423703 + ... + 423773.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^30085398 is an apocalyptic number.

30085398 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30085398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41472000).

30085398 is an abundant number, since it is smaller than the sum of its proper divisors (52858602).

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

30085398 is a wasteful number, since it uses less digits than its factorization.

30085398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 30085398 is about 5485.0157702599. The cubic root of 30085398 is about 311.0178062130.

The spelling of 30085398 in words is "thirty million, eighty-five thousand, three hundred ninety-eight".