213454932 has 12 divisors (see below), whose sum is σ = 498061536. Its totient is φ = 71151640.

The previous prime is 213454909. The next prime is 213454939. The reversal of 213454932 is 239454312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 213454893 and 213454902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213454939) 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 3 ways as a sum of consecutive naturals, for example, 8893944 + ... + 8893967.

It is an arithmetic number, because the mean of its divisors is an integer number (41505128).

Almost surely, 2^213454932 is an apocalyptic number.

It is an amenable number.

213454932 is an abundant number, since it is smaller than the sum of its proper divisors (284606604).

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

213454932 is a wasteful number, since it uses less digits than its factorization.

213454932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787918 (or 17787916 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 213454932 is about 14610.0969195964. The cubic root of 213454932 is about 597.6341389865.

The spelling of 213454932 in words is "two hundred thirteen million, four hundred fifty-four thousand, nine hundred thirty-two".