208994292 has 36 divisors (see below), whose sum is σ = 568930180. Its totient is φ = 64305792.

The previous prime is 208994273. The next prime is 208994293. The reversal of 208994292 is 292499802.

It can be written as a sum of positive squares in 2 ways, for example, as 33802596 + 175191696 = 5814^2 + 13236^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×208994292² = 87357228177162528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208994293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222817 + ... + 223752.

Almost surely, 2^208994292 is an apocalyptic number.

It is an amenable number.

208994292 is an abundant number, since it is smaller than the sum of its proper divisors (359935888).

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

208994292 is a wasteful number, since it uses less digits than its factorization.

208994292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446592 (or 446587 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 208994292 is about 14456.6348781451. The cubic root of 208994292 is about 593.4418114442.

The spelling of 208994292 in words is "two hundred eight million, nine hundred ninety-four thousand, two hundred ninety-two".