208672998940 has 48 divisors (see below), whose sum is σ = 513030216384. Its totient is φ = 69800025600.

The previous prime is 208672998929. The next prime is 208672998943. The reversal of 208672998940 is 49899276802.

It is a super-2 number, since 2×208672998940² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208672998943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18171351 + ... + 18182830.

It is an arithmetic number, because the mean of its divisors is an integer number (10688129508).

Almost surely, 2^208672998940 is an apocalyptic number.

208672998940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208672998940 is an abundant number, since it is smaller than the sum of its proper divisors (304357217444).

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

208672998940 is a wasteful number, since it uses less digits than its factorization.

208672998940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36354238 (or 36354236 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 208672998940 in words is "two hundred eight billion, six hundred seventy-two million, nine hundred ninety-eight thousand, nine hundred forty".