213399288 has 96 divisors (see below), whose sum is σ = 605928960. Its totient is φ = 67763520.

The previous prime is 213399269. The next prime is 213399299. The reversal of 213399288 is 882993312.

It is a super-2 number, since 2×213399288² = 91078512237813888, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 148831 + ... + 150257.

It is an arithmetic number, because the mean of its divisors is an integer number (6311760).

Almost surely, 2^213399288 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 213399288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302964480).

213399288 is an abundant number, since it is smaller than the sum of its proper divisors (392529672).

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

213399288 is a wasteful number, since it uses less digits than its factorization.

213399288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537 (or 1530 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 213399288 is about 14608.1924959935. The cubic root of 213399288 is about 597.5822035205.

The spelling of 213399288 in words is "two hundred thirteen million, three hundred ninety-nine thousand, two hundred eighty-eight".