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199320427 = 1711724731
BaseRepresentation
bin10111110000101…
…10001101101011
3111220001112020001
423320112031223
5402011223202
631440043431
74640124055
oct1370261553
9456045201
10199320427
11a2569429
1256903577
13323a9ba7
141c6868d5
1512772d87
hexbe1636b

199320427 has 4 divisors (see below), whose sum is σ = 211045176. Its totient is φ = 187595680.

The previous prime is 199320413. The next prime is 199320479. The reversal of 199320427 is 724023991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 199320427 - 215 = 199287659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199320497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5862349 + ... + 5862382.

It is an arithmetic number, because the mean of its divisors is an integer number (52761294).

Almost surely, 2199320427 is an apocalyptic number.

199320427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

199320427 is a deficient number, since it is larger than the sum of its proper divisors (11724749).

199320427 is a wasteful number, since it uses less digits than its factorization.

199320427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11724748.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 199320427 is about 14118.0886454222. The cubic root of 199320427 is about 584.1404348498.

The spelling of 199320427 in words is "one hundred ninety-nine million, three hundred twenty thousand, four hundred twenty-seven".

Divisors: 1 17 11724731 199320427