208470775396 has 81 divisors (see below), whose sum is σ = 420057527841. Its totient is φ = 90469776384.

The previous prime is 208470775393. The next prime is 208470775453. The reversal of 208470775396 is 693577074802.

The square root of 208470775396 is 456586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 16156952100 + 192313823296 = 127110^2 + 438536^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208470775396.

It is not an unprimeable number, because it can be changed into a prime (208470775393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 201810496 + ... + 201811528.

Almost surely, 2^208470775396 is an apocalyptic number.

208470775396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

208470775396 is the 456586-th square number.

It is an amenable number.

208470775396 is an abundant number, since it is smaller than the sum of its proper divisors (211586752445).

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

208470775396 is a wasteful number, since it uses less digits than its factorization.

208470775396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 208470775396 in words is "two hundred eight billion, four hundred seventy million, seven hundred seventy-five thousand, three hundred ninety-six".