190991232 has 96 divisors (see below), whose sum is σ = 552385080. Its totient is φ = 63341568.

The previous prime is 190991219. The next prime is 190991233. The reversal of 190991232 is 232199091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190991233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364923 + ... + 365445.

Almost surely, 2^190991232 is an apocalyptic number.

190991232 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 190991232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276192540).

190991232 is an abundant number, since it is smaller than the sum of its proper divisors (361393848).

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

190991232 is a wasteful number, since it uses less digits than its factorization.

190991232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 190991232 is about 13819.9577423377. The cubic root of 190991232 is about 575.8877095920.

The spelling of 190991232 in words is "one hundred ninety million, nine hundred ninety-one thousand, two hundred thirty-two".