82530000 has 300 divisors, whose sum is σ = 332368608. Its totient is φ = 18720000.

The previous prime is 82529983. The next prime is 82530001. The reversal of 82530000 is 3528.

It is a tau number, because it is divible by the number of its divisors (300).

It is a super-2 number, since 2×82530000² = 13622401800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82530001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 629935 + ... + 630065.

Almost surely, 2^82530000 is an apocalyptic number.

82530000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166184304).

82530000 is an abundant number, since it is smaller than the sum of its proper divisors (249838608).

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

82530000 is a wasteful number, since it uses less digits than its factorization.

82530000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 82530000 is about 9084.6023578360. The cubic root of 82530000 is about 435.3821453621.

Adding to 82530000 its reverse (3528), we get a palindrome (82533528).

The spelling of 82530000 in words is "eighty-two million, five hundred thirty thousand".