398190030 has 128 divisors (see below), whose sum is σ = 1199923200. Its totient is φ = 82456704.

The previous prime is 398190029. The next prime is 398190043. The reversal of 398190030 is 30091893.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 398189973 and 398190000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89601 + ... + 93939.

It is an arithmetic number, because the mean of its divisors is an integer number (9374400).

Almost surely, 2^398190030 is an apocalyptic number.

398190030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 398190030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599961600).

398190030 is an abundant number, since it is smaller than the sum of its proper divisors (801733170).

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

398190030 is a wasteful number, since it uses less digits than its factorization.

398190030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 398190030 is about 19954.6994464963. The cubic root of 398190030 is about 735.6932881897.

The spelling of 398190030 in words is "three hundred ninety-eight million, one hundred ninety thousand, thirty".