198412644 has 24 divisors (see below), whose sum is σ = 490196448. Its totient is φ = 62247040.

The previous prime is 198412639. The next prime is 198412663. The reversal of 198412644 is 446214891.

198412644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486102 + ... + 486509.

It is an arithmetic number, because the mean of its divisors is an integer number (20424852).

Almost surely, 2^198412644 is an apocalyptic number.

It is an amenable number.

198412644 is an abundant number, since it is smaller than the sum of its proper divisors (291783804).

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

198412644 is a wasteful number, since it uses less digits than its factorization.

198412644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972635 (or 972633 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 198412644 is about 14085.9023140160. The cubic root of 198412644 is about 583.2522839956.

The spelling of 198412644 in words is "one hundred ninety-eight million, four hundred twelve thousand, six hundred forty-four".