213818748 has 96 divisors (see below), whose sum is σ = 597445632. Its totient is φ = 58656000.

The previous prime is 213818699. The next prime is 213818779. The reversal of 213818748 is 847818312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89773 + ... + 92123.

It is an arithmetic number, because the mean of its divisors is an integer number (6223392).

Almost surely, 2^213818748 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 213818748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298722816).

213818748 is an abundant number, since it is smaller than the sum of its proper divisors (383626884).

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

213818748 is a wasteful number, since it uses less digits than its factorization.

213818748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435 (or 2433 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 213818748 is about 14622.5424601880. The cubic root of 213818748 is about 597.9734853253.

The spelling of 213818748 in words is "two hundred thirteen million, eight hundred eighteen thousand, seven hundred forty-eight".