198408215 has 16 divisors (see below), whose sum is σ = 246896640. Its totient is φ = 152902560.

The previous prime is 198408211. The next prime is 198408247. The reversal of 198408215 is 512804891.

It is not a de Polignac number, because 198408215 - 2² = 198408211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198408211) 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, 32366 + ... + 38004.

It is an arithmetic number, because the mean of its divisors is an integer number (15431040).

Almost surely, 2^198408215 is an apocalyptic number.

198408215 is a deficient number, since it is larger than the sum of its proper divisors (48488425).

198408215 is a wasteful number, since it uses less digits than its factorization.

198408215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 198408215 is about 14085.7450992129. The cubic root of 198408215 is about 583.2479441452.

The spelling of 198408215 in words is "one hundred ninety-eight million, four hundred eight thousand, two hundred fifteen".