208523394 has 24 divisors (see below), whose sum is σ = 478377900. Its totient is φ = 65419008.

The previous prime is 208523387. The next prime is 208523401. The reversal of 208523394 is 493325802.

208523394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (208523387) and next prime (208523401).

It can be written as a sum of positive squares in 2 ways, for example, as 206928225 + 1595169 = 14385^2 + 1263^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340419 + ... + 341030.

Almost surely, 2^208523394 is an apocalyptic number.

208523394 is an abundant number, since it is smaller than the sum of its proper divisors (269854506).

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

208523394 is a wasteful number, since it uses less digits than its factorization.

208523394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681474 (or 681471 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 208523394 is about 14440.3391234417. The cubic root of 208523394 is about 592.9957694255.

The spelling of 208523394 in words is "two hundred eight million, five hundred twenty-three thousand, three hundred ninety-four".