213427220 has 24 divisors (see below), whose sum is σ = 450551808. Its totient is φ = 84922400.

The previous prime is 213427217. The next prime is 213427267. The reversal of 213427220 is 22724312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24116 + ... + 31755.

It is an arithmetic number, because the mean of its divisors is an integer number (18772992).

Almost surely, 2^213427220 is an apocalyptic number.

213427220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213427220 is an abundant number, since it is smaller than the sum of its proper divisors (237124588).

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

213427220 is a wasteful number, since it uses less digits than its factorization.

213427220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56071 (or 56069 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 213427220 is about 14609.1485035919. The cubic root of 213427220 is about 597.6082750506.

The spelling of 213427220 in words is "two hundred thirteen million, four hundred twenty-seven thousand, two hundred twenty".