208134966 has 32 divisors (see below), whose sum is σ = 451842048. Its totient is φ = 63534240.

The previous prime is 208134959. The next prime is 208134967. The reversal of 208134966 is 669431802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208134967) 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, 600 + ... + 20411.

It is an arithmetic number, because the mean of its divisors is an integer number (14120064).

Almost surely, 2^208134966 is an apocalyptic number.

208134966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 208134966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225921024).

208134966 is an abundant number, since it is smaller than the sum of its proper divisors (243707082).

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

208134966 is a wasteful number, since it uses less digits than its factorization.

208134966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21156.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 208134966 is about 14426.8834472314. The cubic root of 208134966 is about 592.6273386155.

The spelling of 208134966 in words is "two hundred eight million, one hundred thirty-four thousand, nine hundred sixty-six".