213473420 has 48 divisors (see below), whose sum is σ = 478185120. Its totient is φ = 79770624.

The previous prime is 213473413. The next prime is 213473423. The reversal of 213473420 is 24374312.

It is a self number, because there is not a number n which added to its sum of digits gives 213473420.

It is not an unprimeable number, because it can be changed into a prime (213473423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45002 + ... + 49518.

It is an arithmetic number, because the mean of its divisors is an integer number (9962190).

Almost surely, 2^213473420 is an apocalyptic number.

213473420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213473420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239092560).

213473420 is an abundant number, since it is smaller than the sum of its proper divisors (264711700).

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

213473420 is a wasteful number, since it uses less digits than its factorization.

213473420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682 (or 4680 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 213473420 is about 14610.7296190163. The cubic root of 213473420 is about 597.6513928097.

The spelling of 213473420 in words is "two hundred thirteen million, four hundred seventy-three thousand, four hundred twenty".