198490270 has 32 divisors (see below), whose sum is σ = 393569280. Its totient is φ = 71473440.

The previous prime is 198490261. The next prime is 198490273. The reversal of 198490270 is 72094891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198490273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2571 + ... + 20089.

It is an arithmetic number, because the mean of its divisors is an integer number (12299040).

Almost surely, 2^198490270 is an apocalyptic number.

198490270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198490270 is a deficient number, since it is larger than the sum of its proper divisors (195079010).

198490270 is a wasteful number, since it uses less digits than its factorization.

198490270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17640.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 198490270 is about 14088.6574945947. The cubic root of 198490270 is about 583.3283370094.

The spelling of 198490270 in words is "one hundred ninety-eight million, four hundred ninety thousand, two hundred seventy".