208030440 has 64 divisors (see below), whose sum is σ = 626492160. Its totient is φ = 55261440.

The previous prime is 208030409. The next prime is 208030441. The reversal of 208030440 is 44030802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (208030441) 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, 29322 + ... + 35718.

It is an arithmetic number, because the mean of its divisors is an integer number (9788940).

Almost surely, 2^208030440 is an apocalyptic number.

208030440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208030440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313246080).

208030440 is an abundant number, since it is smaller than the sum of its proper divisors (418461720).

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

208030440 is a wasteful number, since it uses less digits than its factorization.

208030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 208030440 is about 14423.2603803717. The cubic root of 208030440 is about 592.5281155987.

The spelling of 208030440 in words is "two hundred eight million, thirty thousand, four hundred forty".