198601040 has 40 divisors (see below), whose sum is σ = 503726688. Its totient is φ = 72218240.

The previous prime is 198601009. The next prime is 198601049. The reversal of 198601040 is 40106891.

198601040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 198600994 and 198601012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198601049) 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, 111962 + ... + 113721.

Almost surely, 2^198601040 is an apocalyptic number.

198601040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198601040 is an abundant number, since it is smaller than the sum of its proper divisors (305125648).

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

198601040 is a wasteful number, since it uses less digits than its factorization.

198601040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225707 (or 225701 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 198601040 is about 14092.5881228396. The cubic root of 198601040 is about 583.4368280768.

The spelling of 198601040 in words is "one hundred ninety-eight million, six hundred one thousand, forty".