972143532 has 60 divisors (see below), whose sum is σ = 2564783760. Its totient is φ = 321063264.

The previous prime is 972143443. The next prime is 972143537. The reversal of 972143532 is 235341279.

972143532 is a `hidden beast` number, since 97 + 214 + 353 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (972143537) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 21553 + ... + 49079.

It is an arithmetic number, because the mean of its divisors is an integer number (42746396).

Almost surely, 2^972143532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 972143532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282391880).

972143532 is an abundant number, since it is smaller than the sum of its proper divisors (1592640228).

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

972143532 is a wasteful number, since it uses less digits than its factorization.

972143532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27652 (or 27641 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 972143532 is about 31179.2163467910. The cubic root of 972143532 is about 990.6269307276.

The spelling of 972143532 in words is "nine hundred seventy-two million, one hundred forty-three thousand, five hundred thirty-two".