190551312 has 160 divisors (see below), whose sum is σ = 635951360. Its totient is φ = 53498880.

The previous prime is 190551311. The next prime is 190551329. The reversal of 190551312 is 213155091.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (190551311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183948 + ... + 184980.

It is an arithmetic number, because the mean of its divisors is an integer number (3974696).

Almost surely, 2^190551312 is an apocalyptic number.

190551312 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 190551312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317975680).

190551312 is an abundant number, since it is smaller than the sum of its proper divisors (445400048).

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

190551312 is a wasteful number, since it uses less digits than its factorization.

190551312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 190551312 is about 13804.0324543229. The cubic root of 190551312 is about 575.4452123428.

The spelling of 190551312 in words is "one hundred ninety million, five hundred fifty-one thousand, three hundred twelve".