198431632 has 40 divisors (see below), whose sum is σ = 446846400. Its totient is φ = 83597952.

The previous prime is 198431621. The next prime is 198431683. The reversal of 198431632 is 236134891.

It is a super-2 number, since 2×198431632² = 78750225156366848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 198431591 and 198431600.

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, 8407 + ... + 21622.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^198431632 is an apocalyptic number.

It is an amenable number.

198431632 is an abundant number, since it is smaller than the sum of its proper divisors (248414768).

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

198431632 is a wasteful number, since it uses less digits than its factorization.

198431632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30103 (or 30097 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 198431632 is about 14086.5763051211. The cubic root of 198431632 is about 583.2708890618.

The spelling of 198431632 in words is "one hundred ninety-eight million, four hundred thirty-one thousand, six hundred thirty-two".