208252390 has 8 divisors (see below), whose sum is σ = 374854320. Its totient is φ = 83300952.

The previous prime is 208252361. The next prime is 208252409. The reversal of 208252390 is 93252802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10412610 + ... + 10412629.

It is an arithmetic number, because the mean of its divisors is an integer number (46856790).

Almost surely, 2^208252390 is an apocalyptic number.

208252390 is a deficient number, since it is larger than the sum of its proper divisors (166601930).

208252390 is a wasteful number, since it uses less digits than its factorization.

208252390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20825246.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 208252390 is about 14430.9524980162. The cubic root of 208252390 is about 592.7387656563.

The spelling of 208252390 in words is "two hundred eight million, two hundred fifty-two thousand, three hundred ninety".