84783728 has 20 divisors (see below), whose sum is σ = 164421768. Its totient is φ = 42352320.

The previous prime is 84783707. The next prime is 84783737. The reversal of 84783728 is 82738748.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23450 + ... + 26822.

Almost surely, 2^84783728 is an apocalyptic number.

It is an amenable number.

84783728 is a deficient number, since it is larger than the sum of its proper divisors (79638040).

84783728 is a wasteful number, since it uses less digits than its factorization.

84783728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952 (or 4946 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The square root of 84783728 is about 9207.8079910476. The cubic root of 84783728 is about 439.3097441645.

The spelling of 84783728 in words is "eighty-four million, seven hundred eighty-three thousand, seven hundred twenty-eight".