297428 has 6 divisors (see below), whose sum is σ = 520506. Its totient is φ = 148712.

The previous prime is 297421. The next prime is 297439. The reversal of 297428 is 824792.

It can be written as a sum of positive squares in only one way, i.e., 183184 + 114244 = 428^2 + 338^2 .

It is a d-powerful number, because it can be written as 2 + 9² + 4⁹ + 7⁴ + 2⁵ + 8⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 297394 and 297403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297421) by changing a digit.

297428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37175 + ... + 37182.

It is an arithmetic number, because the mean of its divisors is an integer number (86751).

2²⁹⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

297428 is a deficient number, since it is larger than the sum of its proper divisors (223078).

297428 is a wasteful number, since it uses less digits than its factorization.

297428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74361 (or 74359 counting only the distinct ones).

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

The square root of 297428 is about 545.3695994461. The cubic root of 297428 is about 66.7514366096.

The spelling of 297428 in words is "two hundred ninety-seven thousand, four hundred twenty-eight".