259191428 has 12 divisors (see below), whose sum is σ = 454336512. Its totient is φ = 129381000.

The previous prime is 259191421. The next prime is 259191433. The reversal of 259191428 is 824191952.

It is not an unprimeable number, because it can be changed into a prime (259191421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50948 + ... + 55803.

It is an arithmetic number, because the mean of its divisors is an integer number (37861376).

Almost surely, 2^259191428 is an apocalyptic number.

It is an amenable number.

259191428 is a deficient number, since it is larger than the sum of its proper divisors (195145084).

259191428 is a wasteful number, since it uses less digits than its factorization.

259191428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107362 (or 107360 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 259191428 is about 16099.4232194821. The cubic root of 259191428 is about 637.5881127984.

The spelling of 259191428 in words is "two hundred fifty-nine million, one hundred ninety-one thousand, four hundred twenty-eight".