198941040 has 120 divisors (see below), whose sum is σ = 676362960. Its totient is φ = 52396032.

The previous prime is 198941033. The next prime is 198941047. The reversal of 198941040 is 40149891.

It is an interprime number because it is at equal distance from previous prime (198941033) and next prime (198941047).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 198940986 and 198941004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198941047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58096 + ... + 61424.

It is an arithmetic number, because the mean of its divisors is an integer number (5636358).

Almost surely, 2^198941040 is an apocalyptic number.

198941040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198941040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338181480).

198941040 is an abundant number, since it is smaller than the sum of its proper divisors (477421920).

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

198941040 is a wasteful number, since it uses less digits than its factorization.

198941040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 198941040 is about 14104.6460430597. The cubic root of 198941040 is about 583.7695813334.

The spelling of 198941040 in words is "one hundred ninety-eight million, nine hundred forty-one thousand, forty".