198201730 has 16 divisors (see below), whose sum is σ = 375540480. Its totient is φ = 75107952.

The previous prime is 198201727. The next prime is 198201733. The reversal of 198201730 is 37102891.

It is an interprime number because it is at equal distance from previous prime (198201727) and next prime (198201733).

It is a junction number, because it is equal to n+sod(n) for n = 198201692 and 198201701.

It is not an unprimeable number, because it can be changed into a prime (198201733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521394 + ... + 521773.

It is an arithmetic number, because the mean of its divisors is an integer number (23471280).

Almost surely, 2^198201730 is an apocalyptic number.

198201730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198201730 is a deficient number, since it is larger than the sum of its proper divisors (177338750).

198201730 is a wasteful number, since it uses less digits than its factorization.

198201730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043193.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 198201730 is about 14078.4136180182. The cubic root of 198201730 is about 583.0455436648.

The spelling of 198201730 in words is "one hundred ninety-eight million, two hundred one thousand, seven hundred thirty".