208315940 has 48 divisors (see below), whose sum is σ = 500798592. Its totient is φ = 71302656.

The previous prime is 208315937. The next prime is 208315997. The reversal of 208315940 is 49513802.

It is a junction number, because it is equal to n+sod(n) for n = 208315897 and 208315906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136019 + ... + 137541.

It is an arithmetic number, because the mean of its divisors is an integer number (10433304).

Almost surely, 2^208315940 is an apocalyptic number.

208315940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208315940 is an abundant number, since it is smaller than the sum of its proper divisors (292482652).

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

208315940 is a wasteful number, since it uses less digits than its factorization.

208315940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516 (or 2514 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 208315940 is about 14433.1541944233. The cubic root of 208315940 is about 592.7990526276.

The spelling of 208315940 in words is "two hundred eight million, three hundred fifteen thousand, nine hundred forty".