198412590 has 16 divisors (see below), whose sum is σ = 476190288. Its totient is φ = 52910016.

The previous prime is 198412589. The next prime is 198412597. The reversal of 198412590 is 95214891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198412597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306847 + ... + 3306906.

It is an arithmetic number, because the mean of its divisors is an integer number (29761893).

Almost surely, 2^198412590 is an apocalyptic number.

198412590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198412590 is an abundant number, since it is smaller than the sum of its proper divisors (277777698).

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

198412590 is a wasteful number, since it uses less digits than its factorization.

198412590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613763.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 198412590 is about 14085.9003972057. The cubic root of 198412590 is about 583.2522310830.

The spelling of 198412590 in words is "one hundred ninety-eight million, four hundred twelve thousand, five hundred ninety".