198457656 has 32 divisors (see below), whose sum is σ = 497024640. Its totient is φ = 66035168.

The previous prime is 198457621. The next prime is 198457657. The reversal of 198457656 is 656754891.

198457656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 198457599 and 198457608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198457657) 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, 7045 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (15532020).

Almost surely, 2^198457656 is an apocalyptic number.

It is a pronic number, being equal to 14087×14088.

It is an amenable number.

198457656 is an abundant number, since it is smaller than the sum of its proper divisors (298566984).

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

198457656 is a wasteful number, since it uses less digits than its factorization.

198457656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14683 (or 14679 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The square root of 198457656 is about 14087.4999911269. The cubic root of 198457656 is about 583.2963863039.

The spelling of 198457656 in words is "one hundred ninety-eight million, four hundred fifty-seven thousand, six hundred fifty-six".