971428144 has 20 divisors (see below), whose sum is σ = 1992856824. Its totient is φ = 457142528.

The previous prime is 971428057. The next prime is 971428151. The reversal of 971428144 is 441824179.

971428144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 971428097 and 971428106.

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, 1785442 + ... + 1785985.

Almost surely, 2^971428144 is an apocalyptic number.

It is an amenable number.

971428144 is an abundant number, since it is smaller than the sum of its proper divisors (1021428680).

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

971428144 is a wasteful number, since it uses less digits than its factorization.

971428144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571452 (or 3571446 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 971428144 is about 31167.7420420537. The cubic root of 971428144 is about 990.3838745316.

It can be divided in two parts, 97 and 1428144, that added together give a palindrome (1428241).

The spelling of 971428144 in words is "nine hundred seventy-one million, four hundred twenty-eight thousand, one hundred forty-four".