84082440 has 64 divisors (see below), whose sum is σ = 271656000. Its totient is φ = 20696832.

The previous prime is 84082423. The next prime is 84082441. The reversal of 84082440 is 4428048.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 84082398 and 84082407.

It is not an unprimeable number, because it can be changed into a prime (84082441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25390 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (4244625).

Almost surely, 2^84082440 is an apocalyptic number.

It is an amenable number.

84082440 is an abundant number, since it is smaller than the sum of its proper divisors (187573560).

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

84082440 is a wasteful number, since it uses less digits than its factorization.

84082440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53926 (or 53922 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 84082440 is about 9169.6477576840. The cubic root of 84082440 is about 438.0951399841.

The spelling of 84082440 in words is "eighty-four million, eighty-two thousand, four hundred forty".