198382580 has 24 divisors (see below), whose sum is σ = 454476960. Its totient is φ = 72139040.

The previous prime is 198382549. The next prime is 198382589. The reversal of 198382580 is 85283891.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198382589) 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, 450650 + ... + 451089.

It is an arithmetic number, because the mean of its divisors is an integer number (18936540).

Almost surely, 2^198382580 is an apocalyptic number.

198382580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198382580 is an abundant number, since it is smaller than the sum of its proper divisors (256094380).

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

198382580 is a wasteful number, since it uses less digits than its factorization.

198382580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901759 (or 901757 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 198382580 is about 14084.8351073060. The cubic root of 198382580 is about 583.2228238731. Note that the first 3 decimals are identical.

The spelling of 198382580 in words is "one hundred ninety-eight million, three hundred eighty-two thousand, five hundred eighty".