82452420 has 36 divisors (see below), whose sum is σ = 250106220. Its totient is φ = 21987264.

The previous prime is 82452407. The next prime is 82452439. The reversal of 82452420 is 2425428.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9144576 + 73307844 = 3024^2 + 8562^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 228855 + ... + 229214.

It is an arithmetic number, because the mean of its divisors is an integer number (6947395).

Almost surely, 2^82452420 is an apocalyptic number.

It is an amenable number.

82452420 is an abundant number, since it is smaller than the sum of its proper divisors (167653800).

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

82452420 is a wasteful number, since it uses less digits than its factorization.

82452420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458084 (or 458079 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 82452420 is about 9080.3314917463. The cubic root of 82452420 is about 435.2456796888.

Adding to 82452420 its reverse (2425428), we get a palindrome (84877848).

The spelling of 82452420 in words is "eighty-two million, four hundred fifty-two thousand, four hundred twenty".