198311832 has 48 divisors (see below), whose sum is σ = 540343440. Its totient is φ = 65704128.

The previous prime is 198311807. The next prime is 198311843. The reversal of 198311832 is 238113891.

It is a super-2 number, since 2×198311832² = 78655165422392448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3778 + ... + 20270.

It is an arithmetic number, because the mean of its divisors is an integer number (11257155).

Almost surely, 2^198311832 is an apocalyptic number.

198311832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198311832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270171720).

198311832 is an abundant number, since it is smaller than the sum of its proper divisors (342031608).

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

198311832 is a wasteful number, since it uses less digits than its factorization.

198311832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16672 (or 16665 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 198311832 is about 14082.3233878505. The cubic root of 198311832 is about 583.1534852005.

The spelling of 198311832 in words is "one hundred ninety-eight million, three hundred eleven thousand, eight hundred thirty-two".