198436456 has 64 divisors (see below), whose sum is σ = 422092800. Its totient is φ = 86961600.

The previous prime is 198436453. The next prime is 198436457. The reversal of 198436456 is 654634891.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (198436451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107461 + ... + 109291.

It is an arithmetic number, because the mean of its divisors is an integer number (6595200).

Almost surely, 2^198436456 is an apocalyptic number.

It is an amenable number.

198436456 is an abundant number, since it is smaller than the sum of its proper divisors (223656344).

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

198436456 is a wasteful number, since it uses less digits than its factorization.

198436456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1906 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 198436456 is about 14086.7475309242. The cubic root of 198436456 is about 583.2756155864.

The spelling of 198436456 in words is "one hundred ninety-eight million, four hundred thirty-six thousand, four hundred fifty-six".