213745248 has 144 divisors (see below), whose sum is σ = 636854400. Its totient is φ = 67921920.

The previous prime is 213745247. The next prime is 213745271. The reversal of 213745248 is 842547312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213745247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794458 + ... + 794726.

It is an arithmetic number, because the mean of its divisors is an integer number (4422600).

Almost surely, 2^213745248 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 213745248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318427200).

213745248 is an abundant number, since it is smaller than the sum of its proper divisors (423109152).

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

213745248 is a wasteful number, since it uses less digits than its factorization.

213745248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 394 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 213745248 is about 14620.0290013392. The cubic root of 213745248 is about 597.9049598591.

The spelling of 213745248 in words is "two hundred thirteen million, seven hundred forty-five thousand, two hundred forty-eight".