198606240 has 576 divisors, whose sum is σ = 877443840. Its totient is φ = 39813120.

The previous prime is 198606229. The next prime is 198606251. The reversal of 198606240 is 42606891.

198606240 is a `hidden beast` number, since 1 + 9 + 8 + 606 + 2 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (198606229) and next prime (198606251).

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

It is a junction number, because it is equal to n+sod(n) for n = 198606195 and 198606204.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3255810 + ... + 3255870.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^198606240 is an apocalyptic number.

198606240 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 198606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438721920).

198606240 is an abundant number, since it is smaller than the sum of its proper divisors (678837600).

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

198606240 is a wasteful number, since it uses less digits than its factorization.

198606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 198606240 is about 14092.7726157772. The cubic root of 198606240 is about 583.4419201029.

The spelling of 198606240 in words is "one hundred ninety-eight million, six hundred six thousand, two hundred forty".