208226780 has 24 divisors (see below), whose sum is σ = 437548608. Its totient is φ = 83238848.

The previous prime is 208226773. The next prime is 208226791. The reversal of 208226780 is 87622802.

208226780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208226780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56762 + ... + 60318.

It is an arithmetic number, because the mean of its divisors is an integer number (18231192).

Almost surely, 2^208226780 is an apocalyptic number.

208226780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208226780 is an abundant number, since it is smaller than the sum of its proper divisors (229321828).

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

208226780 is a wasteful number, since it uses less digits than its factorization.

208226780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6493 (or 6491 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 208226780 is about 14430.0651419181. The cubic root of 208226780 is about 592.7144671563.

The spelling of 208226780 in words is "two hundred eight million, two hundred twenty-six thousand, seven hundred eighty".