208742226 has 32 divisors (see below), whose sum is σ = 520501248. Its totient is φ = 54218640.

The previous prime is 208742159. The next prime is 208742231. The reversal of 208742226 is 622247802.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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, 225450 + ... + 226373.

It is an arithmetic number, because the mean of its divisors is an integer number (16265664).

Almost surely, 2^208742226 is an apocalyptic number.

208742226 is an abundant number, since it is smaller than the sum of its proper divisors (311759022).

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

208742226 is a wasteful number, since it uses less digits than its factorization.

208742226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451846.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 208742226 is about 14447.9142439315. The cubic root of 208742226 is about 593.2031339811.

The spelling of 208742226 in words is "two hundred eight million, seven hundred forty-two thousand, two hundred twenty-six".