213928484 has 72 divisors (see below), whose sum is σ = 474050304. Its totient is φ = 82684800.

The previous prime is 213928439. The next prime is 213928501. The reversal of 213928484 is 484829312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789269 + ... + 789539.

It is an arithmetic number, because the mean of its divisors is an integer number (6584032).

Almost surely, 2^213928484 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 213928484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237025152).

213928484 is an abundant number, since it is smaller than the sum of its proper divisors (260121820).

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

213928484 is a wasteful number, since it uses less digits than its factorization.

213928484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 524 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 213928484 is about 14626.2942675170. The cubic root of 213928484 is about 598.0757650934.

It can be divided in two parts, 213928 and 484, that added together give a palindrome (214412).

The spelling of 213928484 in words is "two hundred thirteen million, nine hundred twenty-eight thousand, four hundred eighty-four".