198774000 has 240 divisors, whose sum is σ = 721724640. Its totient is φ = 52876800.

The previous prime is 198773999. The next prime is 198774041. The reversal of 198774000 is 477891.

198774000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×198774000² = 79022206152000000, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 485796 + ... + 486204.

It is an arithmetic number, because the mean of its divisors is an integer number (3007186).

Almost surely, 2^198774000 is an apocalyptic number.

198774000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198774000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360862320).

198774000 is an abundant number, since it is smaller than the sum of its proper divisors (522950640).

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

198774000 is an equidigital number, since it uses as much as digits as its factorization.

198774000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 198774000 is about 14098.7233464594. The cubic root of 198774000 is about 583.6061490325.

The spelling of 198774000 in words is "one hundred ninety-eight million, seven hundred seventy-four thousand".