2173530528 has 288 divisors, whose sum is σ = 7006551552. Its totient is φ = 634521600.

The previous prime is 2173530493. The next prime is 2173530539. The reversal of 2173530528 is 8250353712.

It is a happy number.

2173530528 is a `hidden beast` number, since 2 + 1 + 73 + 530 + 52 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×2173530528² = 9448469912295917568, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2173530492 and 2173530501.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7079751 + ... + 7080057.

It is an arithmetic number, because the mean of its divisors is an integer number (24328304).

Almost surely, 2^2173530528 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 2173530528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3503275776).

2173530528 is an abundant number, since it is smaller than the sum of its proper divisors (4833021024).

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

2173530528 is a wasteful number, since it uses less digits than its factorization.

2173530528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 2173530528 is about 46621.1382100437. The cubic root of 2173530528 is about 1295.3543308721.

The spelling of 2173530528 in words is "two billion, one hundred seventy-three million, five hundred thirty thousand, five hundred twenty-eight".