213270528 has 60 divisors (see below), whose sum is σ = 568835120. Its totient is φ = 71073792.

The previous prime is 213270517. The next prime is 213270529. The reversal of 213270528 is 825072312.

It is a super-2 number, since 2×213270528² = 90968636226797568, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 213270495 and 213270504.

It is not an unprimeable number, because it can be changed into a prime (213270529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46983 + ... + 51321.

Almost surely, 2^213270528 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 213270528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284417560).

213270528 is an abundant number, since it is smaller than the sum of its proper divisors (355564592).

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

213270528 is an frugal number, since it uses more digits than its factorization.

213270528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370 (or 4344 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 213270528 is about 14603.7847149292. The cubic root of 213270528 is about 597.4619904277.

The spelling of 213270528 in words is "two hundred thirteen million, two hundred seventy thousand, five hundred twenty-eight".