208734028 has 6 divisors (see below), whose sum is σ = 365284556. Its totient is φ = 104367012.

The previous prime is 208734023. The next prime is 208734089. The reversal of 208734028 is 820437802.

It is a junction number, because it is equal to n+sod(n) for n = 208733984 and 208734002.

It is not an unprimeable number, because it can be changed into a prime (208734023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26091750 + ... + 26091757.

Almost surely, 2^208734028 is an apocalyptic number.

It is an amenable number.

208734028 is a deficient number, since it is larger than the sum of its proper divisors (156550528).

208734028 is a wasteful number, since it uses less digits than its factorization.

208734028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52183511 (or 52183509 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 208734028 is about 14447.6305323745. The cubic root of 208734028 is about 593.1953681942.

The spelling of 208734028 in words is "two hundred eight million, seven hundred thirty-four thousand, twenty-eight".