208257023 has 4 divisors (see below), whose sum is σ = 224276808. Its totient is φ = 192237240.

The previous prime is 208256957. The next prime is 208257029. The reversal of 208257023 is 320752802.

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

It is not a de Polignac number, because 208257023 - 2⁸ = 208256767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208257029) 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, 8009873 + ... + 8009898.

It is an arithmetic number, because the mean of its divisors is an integer number (56069202).

Almost surely, 2^208257023 is an apocalyptic number.

208257023 is a deficient number, since it is larger than the sum of its proper divisors (16019785).

208257023 is a wasteful number, since it uses less digits than its factorization.

208257023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16019784.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 208257023 is about 14431.1130201381. The cubic root of 208257023 is about 592.7431611855.

The spelling of 208257023 in words is "two hundred eight million, two hundred fifty-seven thousand, twenty-three".