198274560 has 160 divisors (see below), whose sum is σ = 691777152. Its totient is φ = 48046080.

The previous prime is 198274523. The next prime is 198274577. The reversal of 198274560 is 65472891.

It is a Cunningham number, because it is equal to 14081²-1.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×198274560² = 78625602286387200, which contains 22 as substring.

It is a congruent number.

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, 83307 + ... + 85653.

Almost surely, 2^198274560 is an apocalyptic number.

198274560 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 198274560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345888576).

198274560 is an abundant number, since it is smaller than the sum of its proper divisors (493502592).

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

198274560 is a wasteful number, since it uses less digits than its factorization.

198274560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 198274560 is about 14080.9999644912. Note that the first 4 decimals coincide. The cubic root of 198274560 is about 583.1169490404.

The spelling of 198274560 in words is "one hundred ninety-eight million, two hundred seventy-four thousand, five hundred sixty".