6728188494 has 16 divisors (see below), whose sum is σ = 13462339968. Its totient is φ = 2241735672.

The previous prime is 6728188469. The next prime is 6728188513. The reversal of 6728188494 is 4948818276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233722 + ... + 260925.

It is an arithmetic number, because the mean of its divisors is an integer number (841396248).

Almost surely, 2^6728188494 is an apocalyptic number.

6728188494 is an abundant number, since it is smaller than the sum of its proper divisors (6734151474).

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

6728188494 is a wasteful number, since it uses less digits than its factorization.

6728188494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496919.

The product of its digits is 6193152, while the sum is 57.

The square root of 6728188494 is about 82025.5356215368. The cubic root of 6728188494 is about 1887.8437653128.

The spelling of 6728188494 in words is "six billion, seven hundred twenty-eight million, one hundred eighty-eight thousand, four hundred ninety-four".