198520734 has 16 divisors (see below), whose sum is σ = 397253520. Its totient is φ = 66138240.

The previous prime is 198520733. The next prime is 198520739. The reversal of 198520734 is 437025891.

It is a super-3 number, since 3×198520734³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198520692 and 198520701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198520733) 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, 5004 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (24828345).

Almost surely, 2^198520734 is an apocalyptic number.

198520734 is an abundant number, since it is smaller than the sum of its proper divisors (198732786).

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

198520734 is a wasteful number, since it uses less digits than its factorization.

198520734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17675.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 198520734 is about 14089.7386065179. The cubic root of 198520734 is about 583.3581782797.

The spelling of 198520734 in words is "one hundred ninety-eight million, five hundred twenty thousand, seven hundred thirty-four".