208491472 has 60 divisors (see below), whose sum is σ = 474736356. Its totient is φ = 88435200.

The previous prime is 208491457. The next prime is 208491497. The reversal of 208491472 is 274194802.

208491472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 126697536 + 81793936 = 11256^2 + 9044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77868 + ... + 80500.

Almost surely, 2^208491472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208491472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237368178).

208491472 is an abundant number, since it is smaller than the sum of its proper divisors (266244884).

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

208491472 is a wasteful number, since it uses less digits than its factorization.

208491472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 208491472 is about 14439.2337746849. The cubic root of 208491472 is about 592.9655081095.

The spelling of 208491472 in words is "two hundred eight million, four hundred ninety-one thousand, four hundred seventy-two".