191145304 has 16 divisors (see below), whose sum is σ = 409597200. Its totient is φ = 81919392.

The previous prime is 191145259. The next prime is 191145347. The reversal of 191145304 is 403541191.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1706599 + ... + 1706710.

It is an arithmetic number, because the mean of its divisors is an integer number (25599825).

Almost surely, 2^191145304 is an apocalyptic number.

191145304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

191145304 is an abundant number, since it is smaller than the sum of its proper divisors (218451896).

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

191145304 is a wasteful number, since it uses less digits than its factorization.

191145304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413322 (or 3413318 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 191145304 is about 13825.5308758832. The cubic root of 191145304 is about 576.0425235453.

Adding to 191145304 its reverse (403541191), we get a palindrome (594686495).

The spelling of 191145304 in words is "one hundred ninety-one million, one hundred forty-five thousand, three hundred four".