84728134830 has 32 divisors (see below), whose sum is σ = 208843405344. Its totient is φ = 21983515776.

The previous prime is 84728134819. The next prime is 84728134847. The reversal of 84728134830 is 3843182748.

It is a self number, because there is not a number n which added to its sum of digits gives 84728134830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38164717 + ... + 38166936.

It is an arithmetic number, because the mean of its divisors is an integer number (6526356417).

Almost surely, 2^84728134830 is an apocalyptic number.

84728134830 is an abundant number, since it is smaller than the sum of its proper divisors (124115270514).

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

84728134830 is a wasteful number, since it uses less digits than its factorization.

84728134830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76331700.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 84728134830 in words is "eighty-four billion, seven hundred twenty-eight million, one hundred thirty-four thousand, eight hundred thirty".