213616424 has 64 divisors (see below), whose sum is σ = 486725760. Its totient is φ = 85800960.

The previous prime is 213616393. The next prime is 213616427. The reversal of 213616424 is 424616312.

213616424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213616427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434819 + ... + 435309.

It is an arithmetic number, because the mean of its divisors is an integer number (7605090).

Almost surely, 2^213616424 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 213616424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243362880).

213616424 is an abundant number, since it is smaller than the sum of its proper divisors (273109336).

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

213616424 is a wasteful number, since it uses less digits than its factorization.

213616424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 974 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 213616424 is about 14615.6226004916. The cubic root of 213616424 is about 597.7848168561.

The spelling of 213616424 in words is "two hundred thirteen million, six hundred sixteen thousand, four hundred twenty-four".