213443872 has 24 divisors (see below), whose sum is σ = 442335600. Its totient is φ = 101104704.

The previous prime is 213443851. The next prime is 213443903. The reversal of 213443872 is 278344312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174922 + ... + 176137.

It is an arithmetic number, because the mean of its divisors is an integer number (18430650).

Almost surely, 2^213443872 is an apocalyptic number.

It is an amenable number.

213443872 is an abundant number, since it is smaller than the sum of its proper divisors (228891728).

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

213443872 is a wasteful number, since it uses less digits than its factorization.

213443872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351088 (or 351080 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 213443872 is about 14609.7184093329. The cubic root of 213443872 is about 597.6238168267.

The spelling of 213443872 in words is "two hundred thirteen million, four hundred forty-three thousand, eight hundred seventy-two".