971728478 has 16 divisors (see below), whose sum is σ = 1701264384. Its totient is φ = 407594040.

The previous prime is 971728427. The next prime is 971728501. The reversal of 971728478 is 874827179.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737738 + ... + 739053.

It is an arithmetic number, because the mean of its divisors is an integer number (106329024).

Almost surely, 2^971728478 is an apocalyptic number.

971728478 is a deficient number, since it is larger than the sum of its proper divisors (729535906).

971728478 is a wasteful number, since it uses less digits than its factorization.

971728478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476847.

The product of its digits is 1580544, while the sum is 53.

The square root of 971728478 is about 31172.5596959890. The cubic root of 971728478 is about 990.4859288469.

The spelling of 971728478 in words is "nine hundred seventy-one million, seven hundred twenty-eight thousand, four hundred seventy-eight".