208798172 has 12 divisors (see below), whose sum is σ = 398614776. Its totient is φ = 94908240.

The previous prime is 208798171. The next prime is 208798189. The reversal of 208798172 is 271897802.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 4745413 = 208798172 / (2 + 0 + 8 + 7 + 9 + 8 + 1 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208798171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2372663 + ... + 2372750.

It is an arithmetic number, because the mean of its divisors is an integer number (33217898).

Almost surely, 2^208798172 is an apocalyptic number.

208798172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

208798172 is a deficient number, since it is larger than the sum of its proper divisors (189816604).

208798172 is a wasteful number, since it uses less digits than its factorization.

208798172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745428 (or 4745426 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 208798172 is about 14449.8502414385. The cubic root of 208798172 is about 593.2561249814.

The spelling of 208798172 in words is "two hundred eight million, seven hundred ninety-eight thousand, one hundred seventy-two".