198742736 has 40 divisors (see below), whose sum is σ = 418425600. Its totient is φ = 91100160.

The previous prime is 198742721. The next prime is 198742751. The reversal of 198742736 is 637247891.

It is an interprime number because it is at equal distance from previous prime (198742721) and next prime (198742751).

It is a super-2 number, since 2×198742736² = 78997350225531392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121 + ... + 19968.

It is an arithmetic number, because the mean of its divisors is an integer number (10460640).

Almost surely, 2^198742736 is an apocalyptic number.

198742736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198742736 is an abundant number, since it is smaller than the sum of its proper divisors (219682864).

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

198742736 is a wasteful number, since it uses less digits than its factorization.

198742736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21147 (or 21141 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 198742736 is about 14097.6145499868. The cubic root of 198742736 is about 583.5755500955.

The spelling of 198742736 in words is "one hundred ninety-eight million, seven hundred forty-two thousand, seven hundred thirty-six".