208067940 has 60 divisors (see below), whose sum is σ = 652721916. Its totient is φ = 55484352.

The previous prime is 208067933. The next prime is 208067941. The reversal of 208067940 is 49760802.

It can be written as a sum of positive squares in 2 ways, for example, as 32558436 + 175509504 = 5706^2 + 13248^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 = 208067895 and 208067904.

It is not an unprimeable number, because it can be changed into a prime (208067941) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62599 + ... + 65838.

Almost surely, 2^208067940 is an apocalyptic number.

208067940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208067940 is an abundant number, since it is smaller than the sum of its proper divisors (444653976).

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

208067940 is a wasteful number, since it uses less digits than its factorization.

208067940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128458 (or 128447 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 208067940 is about 14424.5603052571. The cubic root of 208067940 is about 592.5637169099.

The spelling of 208067940 in words is "two hundred eight million, sixty-seven thousand, nine hundred forty".