82400130 has 24 divisors (see below), whose sum is σ = 214240572. Its totient is φ = 21973344.

The previous prime is 82400089. The next prime is 82400141. The reversal of 82400130 is 3100428.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82029249 + 370881 = 9057^2 + 609^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 457689 + ... + 457868.

Almost surely, 2^82400130 is an apocalyptic number.

82400130 is an abundant number, since it is smaller than the sum of its proper divisors (131840442).

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

82400130 is a wasteful number, since it uses less digits than its factorization.

82400130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915570 (or 915567 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 82400130 is about 9077.4517349309. The cubic root of 82400130 is about 435.1536516261.

Adding to 82400130 its reverse (3100428), we get a palindrome (85500558).

The spelling of 82400130 in words is "eighty-two million, four hundred thousand, one hundred thirty".