84782540 has 24 divisors (see below), whose sum is σ = 182856912. Its totient is φ = 32996160.

The previous prime is 84782507. The next prime is 84782549. The reversal of 84782540 is 4528748.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84782494 and 84782503.

It is not an unprimeable number, because it can be changed into a prime (84782549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56546 + ... + 58025.

It is an arithmetic number, because the mean of its divisors is an integer number (7619038).

Almost surely, 2^84782540 is an apocalyptic number.

It is an amenable number.

84782540 is an abundant number, since it is smaller than the sum of its proper divisors (98074372).

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

84782540 is a wasteful number, since it uses less digits than its factorization.

84782540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114617 (or 114615 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 84782540 is about 9207.7434803539. The cubic root of 84782540 is about 439.3076922676.

The spelling of 84782540 in words is "eighty-four million, seven hundred eighty-two thousand, five hundred forty".