208937340 has 48 divisors (see below), whose sum is σ = 650028960. Its totient is φ = 55716480.

The previous prime is 208937329. The next prime is 208937347. The reversal of 208937340 is 43739802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 208937295 and 208937304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208937347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192921 + ... + 194000.

It is an arithmetic number, because the mean of its divisors is an integer number (13542270).

Almost surely, 2^208937340 is an apocalyptic number.

208937340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208937340 is an abundant number, since it is smaller than the sum of its proper divisors (441091620).

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

208937340 is a wasteful number, since it uses less digits than its factorization.

208937340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386939 (or 386931 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 208937340 is about 14454.6649909294. The cubic root of 208937340 is about 593.3879012502.

The spelling of 208937340 in words is "two hundred eight million, nine hundred thirty-seven thousand, three hundred forty".