972428 has 24 divisors (see below), whose sum is σ = 1799280. Its totient is φ = 459200.

The previous prime is 972427. The next prime is 972431. The reversal of 972428 is 824279.

It is a junction number, because it is equal to n+sod(n) for n = 972394 and 972403.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 972428.

It is not an unprimeable number, because it can be changed into a prime (972427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9578 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (74970).

2⁹⁷²⁴²⁸ is an apocalyptic number.

It is an amenable number.

972428 is a deficient number, since it is larger than the sum of its proper divisors (826852).

972428 is a wasteful number, since it uses less digits than its factorization.

972428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 972428 is about 986.1176400410. The cubic root of 972428 is about 99.0723546838.

It can be divided in two parts, 9724 and 28, that multiplied together give a palindrome (272272).

The spelling of 972428 in words is "nine hundred seventy-two thousand, four hundred twenty-eight".