208860972 has 12 divisors (see below), whose sum is σ = 487342296. Its totient is φ = 69620320.

The previous prime is 208860943. The next prime is 208860989. The reversal of 208860972 is 279068802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×208860972⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8702529 + ... + 8702552.

It is an arithmetic number, because the mean of its divisors is an integer number (40611858).

Almost surely, 2^208860972 is an apocalyptic number.

It is an amenable number.

208860972 is an abundant number, since it is smaller than the sum of its proper divisors (278481324).

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

208860972 is a wasteful number, since it uses less digits than its factorization.

208860972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17405088 (or 17405086 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 208860972 is about 14452.0231109696. The cubic root of 208860972 is about 593.3155966868.

The spelling of 208860972 in words is "two hundred eight million, eight hundred sixty thousand, nine hundred seventy-two".