208403420 has 48 divisors (see below), whose sum is σ = 447920928. Its totient is φ = 81419520.

The previous prime is 208403407. The next prime is 208403423. The reversal of 208403420 is 24304802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208403423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446027 + ... + 446493.

It is an arithmetic number, because the mean of its divisors is an integer number (9331686).

Almost surely, 2^208403420 is an apocalyptic number.

208403420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208403420 is an abundant number, since it is smaller than the sum of its proper divisors (239517508).

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

208403420 is a wasteful number, since it uses less digits than its factorization.

208403420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 208403420 is about 14436.1843989331. The cubic root of 208403420 is about 592.8820208405.

The spelling of 208403420 in words is "two hundred eight million, four hundred three thousand, four hundred twenty".