213709808 has 40 divisors (see below), whose sum is σ = 446846400. Its totient is φ = 98429184.

The previous prime is 213709807. The next prime is 213709879. The reversal of 213709808 is 808907312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213709807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148838 + ... + 150266.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^213709808 is an apocalyptic number.

It is an amenable number.

213709808 is an abundant number, since it is smaller than the sum of its proper divisors (233136592).

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

213709808 is a wasteful number, since it uses less digits than its factorization.

213709808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 213709808 is about 14618.8169151953. The cubic root of 213709808 is about 597.8719128507.

The spelling of 213709808 in words is "two hundred thirteen million, seven hundred nine thousand, eight hundred eight".