84783540 has 48 divisors (see below), whose sum is σ = 238125888. Its totient is φ = 22539264.

The previous prime is 84783521. The next prime is 84783547. The reversal of 84783540 is 4538748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84783547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19179 + ... + 23181.

It is an arithmetic number, because the mean of its divisors is an integer number (4960956).

Almost surely, 2^84783540 is an apocalyptic number.

It is an amenable number.

84783540 is an abundant number, since it is smaller than the sum of its proper divisors (153342348).

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

84783540 is a wasteful number, since it uses less digits than its factorization.

84783540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 84783540 is about 9207.7977823147. The cubic root of 84783540 is about 439.3094194548.

The spelling of 84783540 in words is "eighty-four million, seven hundred eighty-three thousand, five hundred forty".