208427023 has 4 divisors (see below), whose sum is σ = 238202320. Its totient is φ = 178651728.

The previous prime is 208426993. The next prime is 208427029. The reversal of 208427023 is 320724802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208427023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208426982 and 208427000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208427029) 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 3 ways as a sum of consecutive naturals, for example, 14887638 + ... + 14887651.

It is an arithmetic number, because the mean of its divisors is an integer number (59550580).

Almost surely, 2^208427023 is an apocalyptic number.

208427023 is a deficient number, since it is larger than the sum of its proper divisors (29775297).

208427023 is an equidigital number, since it uses as much as digits as its factorization.

208427023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29775296.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 208427023 is about 14437.0018701945. The cubic root of 208427023 is about 592.9044025366.

The spelling of 208427023 in words is "two hundred eight million, four hundred twenty-seven thousand, twenty-three".