198499626 has 48 divisors (see below), whose sum is σ = 477673920. Its totient is φ = 61074000.

The previous prime is 198499619. The next prime is 198499687. The reversal of 198499626 is 626994891.

198499626 is a `hidden beast` number, since 1 + 9 + 8 + 4 + 9 + 9 + 626 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1750 + ... + 20001.

It is an arithmetic number, because the mean of its divisors is an integer number (9951540).

Almost surely, 2^198499626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198499626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238836960).

198499626 is an abundant number, since it is smaller than the sum of its proper divisors (279174294).

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

198499626 is a wasteful number, since it uses less digits than its factorization.

198499626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21788 (or 21769 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 198499626 is about 14088.9895308358. The cubic root of 198499626 is about 583.3375020836.

The spelling of 198499626 in words is "one hundred ninety-eight million, four hundred ninety-nine thousand, six hundred twenty-six".