213047808 has 160 divisors (see below), whose sum is σ = 618710400. Its totient is φ = 64880640.

The previous prime is 213047801. The next prime is 213047837. The reversal of 213047808 is 808740312.

It is not an unprimeable number, because it can be changed into a prime (213047801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070493 + ... + 1070691.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^213047808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213047808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309355200).

213047808 is an abundant number, since it is smaller than the sum of its proper divisors (405662592).

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

213047808 is a wasteful number, since it uses less digits than its factorization.

213047808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 213047808 is about 14596.1573025232. The cubic root of 213047808 is about 597.2539399866.

The spelling of 213047808 in words is "two hundred thirteen million, forty-seven thousand, eight hundred eight".