14920191 has 24 divisors (see below), whose sum is σ = 25321296. Its totient is φ = 8346240.

The previous prime is 14920151. The next prime is 14920201. The reversal of 14920191 is 19102941.

It is not a de Polignac number, because 14920191 - 2¹¹ = 14918143 is a prime.

It is a super-2 number, since 2×14920191² = 445224198952962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14920151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4510 + ... + 7083.

It is an arithmetic number, because the mean of its divisors is an integer number (1055054).

Almost surely, 2^14920191 is an apocalyptic number.

14920191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14920191 is a deficient number, since it is larger than the sum of its proper divisors (10401105).

14920191 is a wasteful number, since it uses less digits than its factorization.

14920191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11623 (or 11620 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 14920191 is about 3862.6663070993. Note that the first 3 decimals coincide. The cubic root of 14920191 is about 246.1830384724.

The spelling of 14920191 in words is "fourteen million, nine hundred twenty thousand, one hundred ninety-one".