82351240 has 16 divisors (see below), whose sum is σ = 185290380. Its totient is φ = 32940480.

The previous prime is 82351231. The next prime is 82351249. The reversal of 82351240 is 4215328.

It is an interprime number because it is at equal distance from previous prime (82351231) and next prime (82351249).

It can be written as a sum of positive squares in 2 ways, for example, as 73719396 + 8631844 = 8586^2 + 2938^2 .

It is not an unprimeable number, because it can be changed into a prime (82351249) 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, 1029351 + ... + 1029430.

Almost surely, 2^82351240 is an apocalyptic number.

It is an amenable number.

82351240 is an abundant number, since it is smaller than the sum of its proper divisors (102939140).

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

82351240 is a wasteful number, since it uses less digits than its factorization.

82351240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058792 (or 2058788 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 82351240 is about 9074.7583989878. The cubic root of 82351240 is about 435.0675721867.

Adding to 82351240 its reverse (4215328), we get a palindrome (86566568).

The spelling of 82351240 in words is "eighty-two million, three hundred fifty-one thousand, two hundred forty".