208055280 has 160 divisors (see below), whose sum is σ = 674956800. Its totient is φ = 52950016.

The previous prime is 208055233. The next prime is 208055317. The reversal of 208055280 is 82550802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1162231 + ... + 1162409.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480).

Almost surely, 2^208055280 is an apocalyptic number.

208055280 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 208055280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337478400).

208055280 is an abundant number, since it is smaller than the sum of its proper divisors (466901520).

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

208055280 is a wasteful number, since it uses less digits than its factorization.

208055280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 208055280 is about 14424.1214637149. The cubic root of 208055280 is about 592.5516983856.

It can be divided in two parts, 208055 and 280, that added together give a triangular number (208335 = T₆₄₅).

The spelling of 208055280 in words is "two hundred eight million, fifty-five thousand, two hundred eighty".