198154404 has 48 divisors (see below), whose sum is σ = 587126400. Its totient is φ = 56615328.

The previous prime is 198154393. The next prime is 198154423. The reversal of 198154404 is 404451891.

198154404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130299 + ... + 131810.

It is an arithmetic number, because the mean of its divisors is an integer number (12231800).

Almost surely, 2^198154404 is an apocalyptic number.

198154404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

198154404 is an abundant number, since it is smaller than the sum of its proper divisors (388971996).

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

198154404 is a wasteful number, since it uses less digits than its factorization.

198154404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262129 (or 262121 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 198154404 is about 14076.7327175023. The cubic root of 198154404 is about 582.9991340297. Note that the first 3 decimals are identical.

The spelling of 198154404 in words is "one hundred ninety-eight million, one hundred fifty-four thousand, four hundred four".