208902057 has 16 divisors (see below), whose sum is σ = 342814080. Its totient is φ = 110189952.

The previous prime is 208902019. The next prime is 208902061. The reversal of 208902057 is 750209802.

It is not a de Polignac number, because 208902057 - 2¹² = 208897961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208942057) 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, 382332 + ... + 382877.

It is an arithmetic number, because the mean of its divisors is an integer number (21425880).

Almost surely, 2^208902057 is an apocalyptic number.

It is an amenable number.

208902057 is a deficient number, since it is larger than the sum of its proper divisors (133912023).

208902057 is a wasteful number, since it uses less digits than its factorization.

208902057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765232.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 208902057 is about 14453.4444683612. Note that the first 4 decimals coincide. The cubic root of 208902057 is about 593.3544978002.

The spelling of 208902057 in words is "two hundred eight million, nine hundred two thousand, fifty-seven".