297906428 has 24 divisors (see below), whose sum is σ = 534794400. Its totient is φ = 145146560.

The previous prime is 297906421. The next prime is 297906439. The reversal of 297906428 is 824609792.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297906421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26873 + ... + 36303.

It is an arithmetic number, because the mean of its divisors is an integer number (22283100).

Almost surely, 2^297906428 is an apocalyptic number.

It is an amenable number.

297906428 is a deficient number, since it is larger than the sum of its proper divisors (236887972).

297906428 is a wasteful number, since it uses less digits than its factorization.

297906428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637 (or 9635 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 297906428 is about 17259.9660486340. The cubic root of 297906428 is about 667.8720845823.

The spelling of 297906428 in words is "two hundred ninety-seven million, nine hundred six thousand, four hundred twenty-eight".