208086420 has 24 divisors (see below), whose sum is σ = 582642144. Its totient is φ = 55489696.

The previous prime is 208086419. The next prime is 208086421. The reversal of 208086420 is 24680802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (208086419) and next prime (208086421).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208086421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733994 + ... + 1734113.

It is an arithmetic number, because the mean of its divisors is an integer number (24276756).

Almost surely, 2^208086420 is an apocalyptic number.

208086420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208086420 is an abundant number, since it is smaller than the sum of its proper divisors (374555724).

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

208086420 is a wasteful number, since it uses less digits than its factorization.

208086420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468119 (or 3468117 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 208086420 is about 14425.2008651526. The cubic root of 208086420 is about 592.5812596627.

The spelling of 208086420 in words is "two hundred eight million, eighty-six thousand, four hundred twenty".