198273582 has 80 divisors (see below), whose sum is σ = 494051712. Its totient is φ = 59019840.

The previous prime is 198273527. The next prime is 198273587. The reversal of 198273582 is 285372891.

It is a happy number.

It is a super-2 number, since 2×198273582² = 78624826638221448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198273587) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63768 + ... + 66804.

Almost surely, 2^198273582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198273582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247025856).

198273582 is an abundant number, since it is smaller than the sum of its proper divisors (295778130).

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

198273582 is a wasteful number, since it uses less digits than its factorization.

198273582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095 (or 3086 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 198273582 is about 14080.9652368011. The cubic root of 198273582 is about 583.1159902869.

It can be divided in two parts, 19827 and 3582, that added together give a square (23409 = 153²).

The spelling of 198273582 in words is "one hundred ninety-eight million, two hundred seventy-three thousand, five hundred eighty-two".