208393530 has 16 divisors (see below), whose sum is σ = 500144544. Its totient is φ = 55571600.

The previous prime is 208393513. The next prime is 208393543. The reversal of 208393530 is 35393802.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 208393491 and 208393500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3473196 + ... + 3473255.

It is an arithmetic number, because the mean of its divisors is an integer number (31259034).

Almost surely, 2^208393530 is an apocalyptic number.

208393530 is an abundant number, since it is smaller than the sum of its proper divisors (291751014).

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

208393530 is a wasteful number, since it uses less digits than its factorization.

208393530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946461.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 208393530 is about 14435.8418528328. The cubic root of 208393530 is about 592.8726420821.

The spelling of 208393530 in words is "two hundred eight million, three hundred ninety-three thousand, five hundred thirty".