208891392 has 160 divisors (see below), whose sum is σ = 593961984. Its totient is φ = 65126400.

The previous prime is 208891387. The next prime is 208891409. The reversal of 208891392 is 293198802.

It is a super-2 number, since 2×208891392² = 87271227303395328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1952203 + ... + 1952309.

Almost surely, 2^208891392 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 208891392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296980992).

208891392 is an abundant number, since it is smaller than the sum of its proper divisors (385070592).

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

208891392 is a wasteful number, since it uses less digits than its factorization.

208891392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 208891392 is about 14453.0755204558. The cubic root of 208891392 is about 593.3444001920.

The spelling of 208891392 in words is "two hundred eight million, eight hundred ninety-one thousand, three hundred ninety-two".