260028397 has 2 divisors, whose sum is σ = 260028398. Its totient is φ = 260028396.

The previous prime is 260028389. The next prime is 260028427. The reversal of 260028397 is 793820062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178649956 + 81378441 = 13366^2 + 9021^2 .

It is a cyclic number.

It is not a de Polignac number, because 260028397 - 2³ = 260028389 is a prime.

It is a super-2 number, since 2×260028397² = 135229534492779218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260028337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130014198 + 130014199.

It is an arithmetic number, because the mean of its divisors is an integer number (130014199).

Almost surely, 2^260028397 is an apocalyptic number.

It is an amenable number.

260028397 is a deficient number, since it is larger than the sum of its proper divisors (1).

260028397 is an equidigital number, since it uses as much as digits as its factorization.

260028397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 260028397 is about 16125.3960261446. The cubic root of 260028397 is about 638.2736654471.

The spelling of 260028397 in words is "two hundred sixty million, twenty-eight thousand, three hundred ninety-seven".